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 12-14-2004, 15:53 Post: 102239
bmlekki



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 Oil for 83 GMC 305

Hey guys I have an 83 GMC 1500 with the 305 V-8.

The Guy I bought it from said he put 15-40 through it year round. It gets real cold my way. Any suggestions?
Thanks






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 12-15-2004, 09:21 Post: 102278
bmlekki



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 Oil for 83 GMC 305

any ideas?






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 12-15-2004, 09:44 Post: 102281
AV8R



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 Oil for 83 GMC 305

15w-40 is a little heavy. 10w-40 summer, 5w-30 winter I think is what was recomended for these.






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 12-15-2004, 09:47 Post: 102282
DRankin



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 Oil for 83 GMC 305

Sounds a little thick to me. Assuming there is no big problem with oil consumption, I think a 10w-30 would help it start better and get better fuel mileage.






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 12-15-2004, 09:51 Post: 102284
kwschumm



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 Oil for 83 GMC 305

Sometimes guys use thicker oil in an attempt to reduce oil consumption, but it does cause increased wear during cold starts. I'd give 5W-30 a try.






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 12-15-2004, 12:49 Post: 102294
bmlekki



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 Oil for 83 GMC 305

Thanks Guys, I just wanted to be sure it was still going to build a good pressure and lube it well.
Thanks






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Discussion Boards > Active Subjects > Messages as Posted > Chevy Pickup Trucks Forum

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