- Oct 7, 2004
- 1985 Black Beauty Coupe, 93 Ruby, 96 CE vert
I really don't use my 93 at all, I use my '85(please don't think I'm bragging). Last year I changed the oil/filter, synthetic as required, and put in gas treatment. I haven't started the car in a year. I know what GM says, but do you folks really think it's necessary to change the oil?. The car is kept in a garage, under a cover. Thanks.