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I see it like this.
the differential is the load distributer of the engine's output... fresh oil removes moisture and wear particles.
synthetic oil handles both well AND it is better at shear loads.
I doubt it makes a hill of beans difference in fuel economy.
perhaps over the life of the car, it'll save a hundred gallons of fuel...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!
My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!
1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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