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Old 04-13-2012, 01:19 PM   #1
dads longhorn
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Cool 1971 C20 longhorn 350 oil weight

Hi, quick question. I'm not at home where the truck info is, and i need to buy oil for the truck on the way home. What grade should I buy? Thank you in advance.
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Old 04-13-2012, 02:51 PM   #2
Shyguy
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Re: 1971 C20 longhorn 350 oil weight

It depends on the number of miles on the engine. I normally run 10-30 wt in my vehicles, but some people run heavier weights in high mileage trucks.
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Old 04-13-2012, 04:25 PM   #3
JointTech
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Re: 1971 C20 longhorn 350 oil weight

i run 10-30 in my 350. I havent dealt with junkers since I was a kid but I think the heaviest we ever put in was 10-40 and that was if it was a smoking pig that leaked in the driveway. lol
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Old 04-13-2012, 07:11 PM   #4
1972RedNeck
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Re: 1971 C20 longhorn 350 oil weight

I happen to have a pen just like that. To bad I couldn't put my pen next to the dent.
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1966 F250 4X4 416
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Originally Posted by GASoline71 View Post
I once pulled an intake manifold for a cam swap... ended up with a full on drag car that ran in the 11's.
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Old 04-13-2012, 07:49 PM   #5
1972RedNeck
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Re: 1971 C20 longhorn 350 oil weight

Whoops. I hate it when I post in the wrong thread.
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Originally Posted by GASoline71 View Post
I once pulled an intake manifold for a cam swap... ended up with a full on drag car that ran in the 11's.
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