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There are three walmarts within a reasonable drive for me and non of them carry 0w-40. I have Amazon prime and they sell 6 quarts for $49. Is that my best option. Has anyone had luck getting their walmart to carry a specific oil? Do any of the auto parts stores come close to walmarts pricing...

Anyone else see adding a half a quart of Mobile one racing 0w30 as being one of the better oil additives. Almost any oil is compatible with a 1/2 quart of another or else we would have to stay with the same oil for life. I'm going with 5 quarts 0w20 Mazda SN w/Moly and 1/2 quart Mobile one...

I found this product called ZDDP Max, says it brings 6 quarts of SM/SN oil to SF levels. I am not concerned about cat life. With the return to timing chains and the complex valve trains engines have these days I think a half a bottle of this per oil change ($5) may be good insurance if you are...

This is one of those old engine designs, it has flat tappets with shims over the lifters. These engines are known to last a half million miles with the older higher ZDDP oils. The procedure to adjust the valves for wear involves buying an expensive set of shims, obviously something I want to...

I have a Subaru FA20 D4-S Direct Injected engine. With the 10% ethanol gas in this area the DI pump is really noisy, the engine sound a lot like a diesel. I know diesel fuel has inherent lubrication and have been diesel engines have been direct injected for years, also that in Japan where my...

I have a Toyota/Scion FRS with the new FA20 subaru engine. I'm normally very consvervative buying cars with a proven track record, but this car hooked me. However the subaru engine gives quite a bit of apprehension. The manual calls for Toyota 0W-20 but says the use of a higher viscosity "may...