at 01 Apr 2004, WideGlide [ snipped-for-privacy@optonline.net] wrote in news:DIXac.9673$ snipped-for-privacy@news4.srv.hcvlny.cv.net:
On the risk of contributing to the neverending synth vs dino debate. :)
I've started using Mobil1 in our vehicles last year. (1995 Mustang,
1992 geo Storm and a 2002 GMC 1500) and extended the oil change interval from 3000 to 5000 miles (actually, that appears standard for the GMC) Rather than having the oil change done, I am now doing it myself. So I'm basically out the same amount of money but have better oil.
My observations so far:
The 92 Geo seems to be running smoother on Mobil1 than it did on dino oil. This is my wife's commuter and she does about 50 miles a day on it. No ill effects or very nasty oil at the 5000 mile change interval. The Mobil1 may actually last longer.
My 95 Mustang seems to do fine on Mobil1 5W30. When I had the engine changed last year, the replacement one got the oil system fully flushed and has been running Mobil1 ever since. Also, no ill effects or nasty oil at the 5000 mark...
The 2002 GMC was switched to Mobil1 5W20 at the first change (5000 miles) and oil gets changed about every 5K miles when the 'change oil' light comes on. No ill effects. Can't comment on the oil as we had 2 'free oil change' coupons from the dealer and had them do it using Mobil1 we brought in. (Believe me, $23 for 6Qt at WallyWorld is way lower than what the dealer wanted for that amount).
Is it overkill? Perhaps, perhaps not, but at least I know there is excellent quality oil in our vehicles and that should help extent their lifespan.