1995 BMW M3 type of oil to use

Tiny
NICOLEBENSON
  • MEMBER
  • 1995 BMW M3
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 116,000 MILES
Did I harm my car by putting 15/40 oil in it? And would it be okay to now add 10/30 oil to that?
Monday, March 30th, 2009 AT 8:01 AM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
In a word, no, you did no harm. I would run it on 15w40 if it were mine and adding oil of different viscosity is frowned upon by the oil engineers, but I have done what you want to and have combined oils without causing harm to the engine.
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Monday, March 30th, 2009 AT 11:22 AM

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