Originally Posted By: JohnnyJohnson
Originally Posted By: fdcg27
Okay, so what if I told you that our long departed '86 Civic was just as clean or maybe cleaner at 90K miles using 10W-40 conventionals available from 1986 through 1990?
Nothing magical about Grp III oils although most are pretty good.
Seriously you have pictures?
Do I have pictures from 1990?
Of course not. You'll just have to take my word on it.
I will confess that I did 3K drains at the time, so that may well have had something to do with it.
This car went on to do a bit over 200K in our ownership, although the second 100K was spent on synthetics.
Any oil changed on suitable intervals will keep an engine clean.