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Old Thu, Jul-06-2006, 10:09:24 PM   #1
ThatOneGuy
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Default Real BMW Service Intervals, Part 1

I found this article, a few people have asked me to post it. Might be a sticky.

Real BMW Service Intervals: Alternative BMW Maintenance Schedule

BMW’s Free Scheduled Maintenance program means that BMW will perform scheduled maintenance free of charge during the BMW New Vehicle Limited Warranty period.

Prior to the advent of BMW Free Scheduled Maintenance, approximate BMW maintenance recommendations were: automatic transmission fluid (ATF) and filter changes every 15,000 miles, manual gearbox and differential oil changes every 30,000 miles, annual brake fluid changes, and coolant changes every two years. Spark plugs, air filter, and fuel filters were typically replaced every 30,000 miles on most BMWs (this is a tune-up) except M cars up to 1995, which got new spark plugs and a valve adjustment every 15,000. Later advances in computer engine management and spark plug technology legitimately allow 60,000-mile spark plug life if not more.

Prior to Free Scheduled Maintenance, you couldn’t change engine oil often enough according to most dealerships. And when the car was in the shop it would often be due for this service or that inspection, all at the owner’s expense.

But once BMW began paying for scheduled maintenance, lo and behold the “schedule” was revised. Now, magically, the cars hardly need any maintenance at all! The 1,200-mile break-in service was done away with except for M cars. Engine oil suddenly lasts 15,000 miles (dealers are supposed to use BMW synthetic oil). Manual gearbox and differential oil? No worries there – now BMW says they NEVER need to be changed, it’s “lifetime fill.” Brake fluid and coolant service intervals were doubled with no change in the original BMW brake fluid and anti-freeze dealers are supposed to use.

So, is Free Scheduled Maintenance all about marketing and cost reduction – BMW’s costs? Draw your own conclusions. There is no doubt that many buyers incorrectly view BMWs as “high maintenance” cars. Nothing can address that more effectively than Free Scheduled Maintenance. But the operative word in the name is “scheduled.” In my opinion, extended service intervals and “lifetime fill” came very close on the heels of Free Scheduled Maintenance.

This is an alternative to BMW’s factory-recommended maintenance schedule. It is not, “Mike Miller’s maintenance schedule.” It is actually BMW’s maintenance schedule, more or less, which was used prior to Free Scheduled Maintenance. It also represents my opinion, based upon my experience and that of my readers, tech advisors, and professional BMW technicians both dealer and independent. I have prepared it because of the large number of readers asking for this information. The fact that my opinions may differ from those of others does not mean anyone is necessarily right or wrong. You will get a different answer from every person you ask about routine vehicle maintenance.

You should also know that in my work I have observed the most common reason for BMW drivability problems in contemporary cars with over 100,000 miles is that they need a tune up – spark plugs, air filter, and fuel filter.

Break-in Service for New Cars

Traditionally, BMW performed a break-in service at 1,200 miles on new cars, which included changing the engine oil and filter, manual gearbox oil or automatic transmission fluid, and differential oil. With the advent of Free Scheduled Maintenance, BMW stopped performing break-in services except on M cars.

I have seen that the engine and drive-line oils in new modern BMWs are literally full of metal at 1,200 miles – as has always been the case with any new car. For this reason, I recommend a 1,200-mile break-in service.

Engine

Oil and Filter Intervals

BMW recommends their Castrol 5W-30 synthetic motor oil in all BMWs except contemporary M cars, for which they recommend their Castrol 10W-60 synthetic motor oil. The factory oil change interval is controlled electronically, but is presently about every 15,000 miles. If you are running BMW’s oil, I recommend an oil and filter change interval between 5,000 and 7,500 miles.

I use Red Line synthetic oil (www.redlineoil.com) in 5W-30, 10W-40, 15W-50, or 20W-50, depending on factory recommendation, ambient temperatures, and severity of service (track use, sustained high rpm use), with a drain interval – 7,500 to 18,000 miles depending on engine and severity of service. Under racing or track conditions I’d use a short interval; same for carbureted engines which tend to get some fuel into the oil. I would run the same intervals with very high end synthetics such as Amsoil and Lubrication Engineers Monolec Ultra.

All other commercially available synthetic oils, 5,000-7,500-mile drain intervals (Mobil-1 is good, we don’t know much about the factory BMW Castrol product).

Old fashioned petroleum oil, same viscosities, 3,000-to-5,000 mile drain intervals (I prefer Kendall)

The following information is courtesy of Motorwatch.com:

“Redline is Group V (polyol ester) based (POE or esters).

“Amsoil and Mobil-1 are Group IV (poly-alpha olefin) based (PAO or synthesized hydrocarbons SHC).

“Castrol Syntec and all the others calling themselves synthetic are Group III (hydrocracked slack wax).

“The petroleum motor alls are all mineral oil based and make up Group II.

”We really should group Red Line by itself, and put the others in separate categories (according to the groups) because their performance is so different.

”See motorwatch>AutoMotiveBible>Oil Change Intervals>oil classifications
http://www.motorwatch.com/images/oilclassifications.jpg

”AutoMotiveBible> Oil Change Intervals>oil change intervals
http://www.motorwatch.com/images/oil...intervals.jpg”


Original BMW filters are recommended for price and quality, or MANN, Mahle, Bosch, or Knecht filters

Spark Plugs

There is no reason to deviate from the factory-recommended Bosch or NGK spark plug specification, changed at 30,000-to-60,000-mile intervals, depending upon the car and severity of service. Basically, any BMW produced after 1993 can easily run 60,000 miles on a set of spark plugs.

The factory also has part numbers and applications for “100,000-mile spark plugs.” These are good too, and are capable of 100,000 miles of service assuming no other problems, which might cause them to foul during that time. However, in engines with spark plugs recessed into the middle of the cylinder head, oil can leak into the spark plug recesses past the valve cover gaskets. This is a hidden leak if the plugs are left in service for an extended period of time, because no one looks in there until they’re changing the plugs or chasing a problem. An oil leak in the spark plug recesses, left to fester, can cause ignition coil failure and even ECU failure. So, even if you want to leave the plugs in service, you should at least check the spark plug recesses for signs of oil leakage at least every 60,000 miles. And at the point you’re in there, you might as well replace the plugs. This is the issue with 100,000-mile plugs.

Moreover, while you may not have any problems running spark plugs for 100,000 miles in some BMWs, this does not mean the plugs will not be worn, or that that wear is not affecting engine performance. In other words, for optimum engine performance, most BMWs want spark plugs every 30,000-to-60,000 miles. M cars except the US specification S50/S52 powered E36 variants want plugs about every 15,000 miles.

Stay away from platinum plugs in BMWs. These don’t last as long as the regular Bosch copper or silver plugs and NGK plus, and have been known to fail in other ways. The regular old Bosch Platinum single electrode plug is, however, a very good choice for cars OTHER THAN BMWs.

Air Filter

Stock paper element, check every 15,000 miles, tap out dirt, replace if necessary, standard interval 30,000 miles, use Original BMW filters or aftermarket filters such as Knecht, MANN, Mahle, or Bosch

K&N oiled cotton gauze filters, clean every 15,000 to 30,000 miles depending on condition, use only K&N approved cleaner and oil, and follow K&N cleaning procedures

Fuel Filter

Replace every 30,000 miles, also replace if fuel pump is replaced, use original BMW filters or Bosch, Knecht, MANN, or Mahle.

Valve Adjustment

Perform every 15,000 to 20,000 miles where applicable

Timing Belt, Tensioner Pulley, and Front Cam Seal

Replace every 5 years or 50,000 miles on vehicles so equipped, water pump replacement also recommended as preventative attendant service, but not required, 40,000 miles or four years on the E30 325iX (1988-1991)

Engine Drive Belts

Replace O.E. or O.E.M. BMW poly-ribbed serpentine belts every 60,000 miles

Replace O.E.M. Continental or Pirelli or original BMW V-belts every 30,000 miles

Replace “auto store” quality V-belts every 15,000 miles

Engine Coolant Service

I recommend changing engine coolant at two-year intervals, using only factory BMW anti-freeze mixed 50-50 with distilled water (reason – BMW anti-freeze is phosphate free, phosphates cause aluminum oxidation, which blocks cylinder head coolant passages and causes head gasket failure, others may claim to be “aluminum safe” or “phosphate free” – make your choice, but I’ve used BMW anti-freeze exclusively in many cars and have never had an aluminum oxidation or head gasket problem)

The factory coolant change interval used to be every two years. It is now every four years.


Continuted....
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Old Thu, Jul-06-2006, 10:10:05 PM   #2
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Part 2

Water and Fuel Hoses

Replace water and fuel hoses every 150,000 miles, highly recommended use of O.E. or O.E.M. hoses only, along with the original hose clamps or Wurth/Zebra replacements. The original BMW hose clamps are far superior to anything you’ll find in a U.S. auto store.

Power Steering Fluid

Replace every 30,000 miles. This is a very neglected operating fluid. Almost all BMWs use automatic transmission fluid in the power steering system, except for some E32 7 Series cars, which use Pentosin hydraulic oil. Nothing will balls up the works faster than using one when you should be using the other. Check the sticker on the reservoir, check the owner’s manual, and if you are still confused, take the car to a pro or e-mail me.

It is not necessary to evacuate the entire power steering system. I just open a line down by the pump.

I have had great experience using Red Line Synthetic Power Steering Fluid – 184,000 miles and counting on the original rack and pinion unit and pump on the vehicle I used to test this product. But I would not use it in place of Pentosin hydraulic oil where that product is specified.

Manual Gearbox Oil

Only synthetic oil should be used in BMW manual gearboxes, drain interval 30,000 miles

Red Line products are highly recommended (www.redlineoil.com). Questions or problems, e-mail me or dave@redlineoil.com.

All the BMW gearbox re-builders I know use Red Line MTL exclusively, regardless of model year or gearbox. The general consensus is, MTL is the better lubricant. However, the D4ATF product will require less shifter babying during cold operation. I use Red Line MTL in manual gearboxes except where I can’t trust the driver to shift properly when the gearbox is cold, in which case I use Red Line D4 ATF.

Automatic Transmission Fluid (ATF) and Filter

For older automatics using Red Line or other synthetic ATF, drain interval 30,000 miles. Old fashioned petroleum ATF, drain interval 15,000 miles

At various production dates in the mid-1990s, which vary according to model, BMW switched to their so-called “lifetime fill” ATF in automatic transmissions, as well as manual gearbox lubricant and differential oil. The reason for this, as far as anyone can tell, is marketing and not engineering – the idea being to foster the notion of the low-maintenance BMW.

There was no explanation of what “lifetime” meant, i.e., lifetime of the car, the component, or for that matter the driver. If it was the component, then obviously anything could be “lifetime fill”. The factory’s initial position is that these lubricants never need to be changed. Then, some time later, it came out that “lifetime” means 100,000 miles. Many dealerships are now recommending manual gearbox and differential oil changes be done at customer expense every 60,000 miles. Every independent BMW technician I know recommends a 30,000-mile interval, and many recommend Red Line synthetic oils (www.redlineoil.com), but not for automatics with “lifetime fill.”

Older automatic transmission models, which do not have “lifetime fill” should have ATF and filter services every 15,000 miles if using petroleum ATF; every 30,000 miles with synthetic.

However, the modern automatic transmissions are different. No one knows exactly what BMW’s proprietary ATF is, so no one knows if there are viable alternatives. We do know that BMW dealerships charge about $500 for an ATF and filter service, due to the price of the ATF. And that’s assuming you can get them to do the job, which is not often the case.

Under no circumstances would I recommend draining any previously unmaintained automatic transmission with much more than 50,000 miles. I have seen it happen too many times, where a well-meaning owner or technician performs an ATF and filter service on a neglected but well-shifting automatic, and then all of the sudden it starts slipping. I can’t explain it, but my feeling is the fresh ATF flushes a bit of sludge from a place where it was doing no harm to a place where it does do harm. Overfilling, under-filling, and cleanliness are also issues in ATF and filter servicing, but these should not be problematic for a professional BMW technician, dealer or independent.

BMW has “backed off” their lifetime fill mantra for automatic transmissions, currently recommending an ATF and filter change every 100,000 miles.

My inclination is to tell people to change “lifetime” ATF and filter every 30,000 miles. However the fact is, I've seen BMW automatic transmissions that were maintained break anyway. In that event, say it happens at 90,000 miles, you would like to have that $1,500 you spent on ATF and filter changes to put toward your new automatic transmission. And if I told you to spend it on maintenance you’re probably not going to be very happy with me. On the other hand, I have seen maintained automatics last 200,000 miles. I have also seen unmaintained automatics last 200,000 miles, although both are very rare. There's just no predicting with these transmissions. When you choose to buy an automatic transmission, you also buy into the vagaries of the darn things, which is one reason technicians hate them.

Whether to maintain a modern BMW automatic is up to you. I am washing my hands of automatic transmissions – I don’t like them, I don’t buy them, and I don’t mess around with them under the car. At the end of the day, for long-term durability, order the car with a manual gearbox.

At automatic transmission replacement time, we are confronted with the reality that the local transmission shop cannot rebuild BMW automatic transmissions, even those built by GM (BMW’s GM transmissions bear not resemblance to GM transmission in domestic cars). There are some domestic specialists who concentrate in BMW automatic transmission rebuilding, and you’ll see their ads in Roundel. However, I have no experience with any of the current domestic re-builders. My experience in the past is…well, I wound up buying a BMW factory rebuilt automatic transmission every time, and this is the course I recommend to readers – “back to the dealer.”

Some of you, having seen the light, may be interested in converting to a manual gearbox. This is always possible, but for most of us it won’t be less expensive than a replacement automatic transmission. This is because of all the other parts and additional labor required. And the newer the car the harder the job will be. It is certainly a doable swap, but there’s no cost savings even if you do the work yourself. The exception would be if you have access to a manual gearbox donor car for little or no expense.

Differential Oil

Recommend Red Line 75W-90 synthetic gear oil, drain interval 30,000 miles in any BMW differential

Okay to use Red Line 75W-90 in place of BMW “lifetime fill” gear oil

Brake Fluid

Recommend one-year brake fluid changes, or prior to each driving school or track event. BMW now recommends two-year brake fluid changes, but used to recommend a one-year interval.

Recommend ATE SL brake fluid for normal street use, ATE Type 200 or Pentosin Racing Brake Fluid for track work or very high performance use

Note

It has to be recognized that the benefits of good drive-train lubricant maintenance do not accrue until the car matures. The difference between the car that ran 15,000-mile oil change intervals and never had it's gearbox or differential oil changed (as per BMW instructions) and the one that ran high-end synthetic lubricants and had it's drive-line maintained in contravention of BMW's instructions, is the strong likelihood that the second car will be running strong at 200,000 miles whereas the first car will likely have a worn out drive-train. BMWs, and most modern cars, will run 100,000 miles just fine with zero maintenance.

So, if you're maintaining the car religiously only to sell it at 75,000 miles then you're a good guy for helping out subsequent owners. That's nice, but to realize the fruits of your diligence, you need to keep the car longer.

© 2002 Mike Miller
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Old Fri, Jul-07-2006, 09:34:41 PM   #3
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Thanks for posting this. Does anyone else think that 30k miles sounds a little too early for replacing the fuel filter though? Exactly how dirty is it at 30k miles?
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Old Fri, Jul-07-2006, 10:46:44 PM   #4
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Quote:
Originally Posted by Marlin Liew
Thanks for posting this. Does anyone else think that 30k miles sounds a little too early for replacing the fuel filter though? Exactly how dirty is it at 30k miles?
I plan on following this guide. I took my car in this week for an "in-between" oil & filter change at 6500 miles (-1200 break-in service = 5300), $99. My next scheduled service is about 6K miles (according to OBD) from now at 12K miles total. Seems like cheap insurance to me.
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Old Fri, Dec-15-2006, 01:33:04 AM   #5
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Default Service and Maintenance Schedules

If anyone is interested in viewing service and maintenance schedules for any of their vehicles, please feel free to see my project at:

Servassist Online

I am adding additional models and updated information regularly. Also, check back after the first of the year for a new local service and maintenance coupon search tool.
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Old Fri, Dec-15-2006, 03:07:57 AM   #6
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Talk about timing. JUST today I was thinking about buying this new M3 and I was looking and searching through the forums for a post EXACTLY like this.

Bravo mate, you've done us all a great favor on this one.

Chad
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Old Sun, Dec-24-2006, 03:05:39 AM   #7
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I had my brake pad and rotors checked last year and then again this year. When I compared the numbers from last year and this year my pad and rotors got thicker. I think that because im close to 50k they dont want to cover the cost of replacement. Should I get a second opinion at another dealer?
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Old Sun, Dec-24-2006, 03:59:36 AM   #8
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You might point it out to the SA, sometimes they can be quite reasonable. You have documentation.


I'm also planning on buying the extended maintenance and warrantee as it gets a little closer. It's not cheap insurance, but the maintenance plan pays for inspection II and anything else that goes wrong is bonus. It also adds to the resale value.

At any rate, you're welcome.
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Old Sun, Dec-24-2006, 04:19:32 AM   #9
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Thank you I will stop by the dealer sometime next week to inquire about the maintenance warranty
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Old Tue, Dec-26-2006, 12:46:29 AM   #10
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Thanks for posting this Mike. It's people like you that make this such a great forum. Are you on M3bc.net? I will give you props if you're on there!
Merry Christmas.
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Discussing Real BMW Service Intervals, Part 1 in the General BMW Discussion Forum - Place to discuss all things BMW. And a place for E30, E36, and E46 owners to get to know each other! BMW News at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)