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twisted like a dreadlock
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Discussion Starter #1
I just changed the oil in my truck and used 10w-30.After I was done I relized the oil cap called for 5w-30.Is this going to hurt my trucks engine?

Thanks.
 

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Registered
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21 Posts
It shouldn't hurt it. I've always used 10w30 in my vehicles. I think the 5w30 is just a lighter oil that you can use when the weather dips below a certain temp (I think when it's colder than 40 degrees) but I've never bothered even in my cavalier 4 banger. Have had any problems turning over when trying to start when cold out.
 

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Trance is what I breathe
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926 Posts
I use 10w30 to keep my oil pressure up.
 

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.......¯\(O_o)/¯.......
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3,480 Posts
Ive used 10-30 for alongtime, hasnt hurt anything....
 

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Never Finished
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1,599 Posts
They call for 5w-30 when they're new, but once you get up to 75,000 miles or so then switch to 10w-30, since the engine is worn, it needs a little thicker oil. I ran 20w-50 in my 91 Firebird with 140k on it and it did great.
 

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Clean N' Dark
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1,921 Posts
In colder areas of North America during the winter, use 5w30 or even 0w30 to have the thinnest oil possible when starting the engine.

That way the top end will get oil ASAP and stop and damage caused by dry friction when the oil is really cold and hard to pump.
 
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