The original test was performed by a known Consumer Magazine. Engines were rebuilt to exacting specifications. Run 100K then torn down, parts weighed.
Advantages of Synthetic - Flows easily at cold temperatures. Race drivers swear by this stuff not at it.
Disadvantage - Expensive
Other findings
No difference between changing oil at 3 and 6 K.
Recommended maximum 12,000 miles because of additives.
Mobil 1, which I use, is nearly $7.00 per quart last time I looked.
I change at 5k and wouldn't sweat it if I screw up and it went to 7K.
I use Mobile 1 filters. $10.00
My brother In Law changes oil at 3K. His reasoning,"wear is caused by dirt and friction". He uses anything but F because he was .... :-)
Due to cost I'm switching to Quaker Syn and sticking with Mobil 1 filters.
My brother in Law, an excellent aircraft mechanic had an engine fail because of a oil filter failure. He will not use any filter that begins with the letter F. Related you think? CYA
Anyone here use Quaker Synthetic?
Hope this helps
Quote:
Originally Posted by jcat
Before i started using Mobil 1, i wrote to Mobil for test reports - report was very technical but essentially, they tested it in NYC on cabs and police cars, ran them for 150,000 miles without an oil change, then tore down the engines completely to check for cylinder, piston wear and found essentially none - engine parts were like new.
That convinced me.
Ran Mobil 1 in a 1992 grand am, 1995 Ford Areostar and in a 1990 toyota corolla for over ten years each, changing oil (and filter) about once/yr or 20,000 miles, whichever came first. Never had any problems whatsoever. When i finally got rid of those cars, had 195,000 miles on grand am, 190,000 on the ford and about the same on the toyota (can't really remember on that one). All were running fine when I got rid of them - only gave them away because relatives needed them at various times.
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