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-   1973 - 1979 F-100 & Larger F-Series Trucks (https://www.ford-trucks.com/forums/forum38/)
-   -   oil? (https://www.ford-trucks.com/forums/1253093-oil.html)

erik68 07-02-2013 02:09 AM
oil?
 
what is the correct oil wieght for a 77 ford f100 with a 351 c
:-jammin

Poison Oil Racing 07-02-2013 07:25 AM
about 4 pounds

Wbruiser2 07-02-2013 07:54 AM
Originally Posted by Poison Oil Racing (Post 13304883)
about 4 pounds
I thought that was for a 351M? :-huh

ranger429 07-02-2013 08:05 AM
Originally Posted by Poison Oil Racing (Post 13304883)
about 4 pounds
That's a tad light, 5 quarts would equal about 7lbs.

mikeo0o0o0 07-02-2013 08:26 AM
Originally Posted by Poison Oil Racing (Post 13304883)
about 4 pounds
:-missingt

To actually answer the OP's question. If the engine is in good shape, use 10W30. If it's worn use a 20W40 or, if really worn, straight 50 weight.
Also, be sure to use an oil that has adequate amount of zinc (ZDDP) to help protect the cam and lifters, although this is less important on high mileage engines.

Poison Oil Racing 07-02-2013 09:18 AM
Originally Posted by ranger429 (Post 13304974)
That's a tad light, 5 quarts would equal about 7lbs.
I was thinking synthetic :)


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