I have a 1993 BMW 325is with 130k miles on it and I took it into a shop to have some work done on it and I noticed after looking over the reciept that they changed my oil and put regular non-synthetic 15-40 oil in it and ive always run full synthetic oil in it ever since I bought the car back when it only had 40k miles on it
Is that ok to change from synthetic to regular oil like that after running full synthetic for almost 100k miles?
should I be worried?
have the same problem?
Wednesday, May 23rd, 2007 AT 10:33 AM