||09-05-2009 11:02 PM
Official Forced Induction Maintenance/Service Thread
I don't see this *important* info posted often so thought I would start a thread to see what everyone is doing to keep thier F/I cars running at top performance. Hopefully everyone is aware that F/I puts a lot more stress on your car's parts that are designed to wear and be replaced. Please post what's on your list of items to check and how often. Here's mine.. :)
Engine Oil/Filter: I believe BMW recommends servicing the oil/filter every 15k miles, even for a n/a car with no mods that seems a little long to me. I may be on the extreme side of caution but my cars gets new oil/filter approx every 2 -3k miles.
Air Filter: Easily overlooked, if you're sucking in a lot more air your filter is going to collect dust and debris a lot faster. Last time I cleaned mine I was a bit overdue. I now clean and oil my filter with each engine oil change.
Transmission Fluid: BMW claims the tranny fluid is good for the life of the car, although they even recommend service @ 100k miles. My car has 50k miles on the clock (most of that was n/a) - I'm planning to change the tranny fluid soon.
Differential: Don't recall what BMW advises - I just changed mine recently. (Wear some kind of gas mask, the diff fluid smells like Sh!t.)
Flex Disk: If you're unfamiliar this is the ultra strong circle of reinforced rubber that connects your transmission to your drive shaft, I replaced mine about 5k miles ago as it was cracked and splitting everywhere. Replace as needed.
Spark Plugs/Coils: I generally replace these as needed. I keep saying I'm going to pony up for the Okada Coils, so far the $1k+ price has deterred me. If you own a HPF car they have recently upgraded to a new high performance plug that is quite expensive, but runs cooler, is pre-gapped, operates more efficiently, lasts longer and puts less stress on your coils.
Tires: uhh.. :shhh:
Brake Pads: :shhh:
Methanol Injection: If your car has this remember to add two teaspoons of "Alcohol Fuel Lubricant" per 1.25 gallons of methanol. See this thread for more info: http://forum.e46fanatics.com/showthr...fuel+lubricant
Coolant: I live in Texas and it gets HOT during the summer months. In the summer I add a mix of distilled water and 2 bottles of Watter Wetter. In the winter months I go back to the oem BMW coolant.
All I can think of for now. Look forward to hearing other's rec's.