I have an '89 GMC Jimmy S-15, bought new, and other than warranty, never used
anything other than Fram and Pennzoil 10w 30 or 40w. Got 210,690 miles on
her now, and I'd hop in and drive to L.A. (from Nashville). Of course, being a
mechanic, most all scheduled maintenance has been performed. I have heard
some bad reviews on Fram the last year or two, and even the Pennziol oil.
Here are my theories:
~Perform Scheduled Maintenance;
~Use a name-brand oil and filter;
~Don't "Drive It Like You Stole It!"
All oil and filter companies are required to meet minimum motor vehicle manufactures
requirements for oil-viscosity breakdown, minimum particle-filtration requirements
blah, blah, blah, etc...
As far as Factory (Motorcraft/Delco) filters, they are all good, from everything I
have read, and even if you are out of warranty, especially that 38,573.5 mile
thing the dealer may give you if you ever do have an oil or filter related engine
failure, (sorry, your warranty ran out 2,573.5 miles ago!!!) you may have a better
chance at litigation if you can prove that you used a factory-recommended oil and
filter. Another good filter that I or my mechanic friends have had good luck with,
is Purolator,. They use them a lot in fleet service where they want their vehicles
to have as much up-time as possible, and an engine-related breakdown on the
road could be costly in many ways.