Hello,
I'm planning on replacing spark plugs, O2 sensor, and the coolant soon.
Is it true there are two sensors to replace on an 2002 325i? I wasn't sure on this one.
Also, can a 2 year complete drain and refill w/ bmw coolant be a substitute vs. doing a complete flush every 4 years?
Any other details that I should know about will be greatly appreciated.
Tia,
Will