The manufacturer recommends using 10W-30 weight oil in the 2002 BMW. A heavier motor oil can be used in extreme climates.
The type of coolant recommended for a 2003 BMW 525i is Glysantin G48. You can purchase this at an auto parts store or a BMW dealership.
The 2002 BMW M5 has double overhead cam (DOHC).
The 2002 BMW X5 has double overhead cam (DOHC).
The 2002 BMW M3 has double overhead cam (DOHC).
The 2002 BMW 5-Series has double overhead cam (DOHC).
The 2002 BMW 7-Series has double overhead cam (DOHC).
The 2002 BMW 3-Series has double overhead cam (DOHC).
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You can find a lot of good information at www.x5world.com this web site has been quite helpful in the past.
will a 2001 BMW 330Ci engine fit in a 2002 BMW 330Xi
will a 2001 BMW 330Ci engine fit in a 2002 BMW 330Xi