Advice and opinions please....
I'm currently doing oil changes (w/filter) at 3500 miles using
Many posts indicate using synthetic oil offers protection far superior
to conventional oils.
What I would like to do is move the oil change / filter interval from
3500 to 7500 making it compatible with the 15K 30K 60K
mileage service intervals.
Is using Synthetic and a good filter at 7500 a good move....or
should I stick to 3500 w/ conventional oil.
What's your experience... I've heard that Shell's Rotella is a good
oil, so is Mobil 1. Still undecided on the oil filter to use.
Car is a 1990 Oldsmobile Silhouette APV with 77,000 miles. Normal
use, no stop and go.