Should I go for 20w60 if it's hot as hell?
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Joined: Apr 2016
Posts: 11,500
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From: Inland NW
None in your engine. But if the car oil has friction modifiers in it, as many do, and you use it in your primary, it can get on your clutch plates and cause clutch slip. Depends how stressed your clutch is to some extent too. Lower power engines maybe not a problem. Hotrod engines, maybe more of an issue. Also motorcycle oils -depending on brand - may have extreme pressure additives to help lube the gears in the transmission, which car oils will not.
Oils are a dark science, fueled I suspect largely by marketing. All you can do is try it and see what happens. If others over there are using it without problems, it is probably ok. Up to you. I prefer to stick with what the factory manual says and what the oil manufacturer says. They probably know more about it than I do.
Oils are a dark science, fueled I suspect largely by marketing. All you can do is try it and see what happens. If others over there are using it without problems, it is probably ok. Up to you. I prefer to stick with what the factory manual says and what the oil manufacturer says. They probably know more about it than I do.
Pretty sure he had the engine in mind with this thread, but who knows? Maybe the primary was his major concern.
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