Sorry I'm joining the thread late. FWIW...
Originally posted by Joey:
How many people with blown engines, and destroyed differentials, race their vehicles in some way?
I always like the ones that complain about it happening, and list their 1/4 mile times in their sig.
...Similarly, what proportion of folks you see being pulled out of ditches in the winter are driving SUV's?
I suspect the correlation isn't between synthetic motor oil and blown engines... It's that drivers who hit the rev limiter with some frequency put Mobil 1 in, thinking it will protect the motor from the abuse. It may prolong the motor's life to some extent, but sooner or later you gotta pay the piper...
I've used Mobil 1 5W/30 from the 2nd oil change onward. I'm still flushing out the sludge from just 6000 miles of dino oil! All my manual says is to use oil with a certain API seal on it, and Mobil 1 5W/30 does.
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Garrick
Houston, TX
E0, Silver