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- - Oil Questions (https://blazerforum.com/forum/full-size-k5-1969-1991-gmt415-1992-1994-tech-42/oil-questions-30130/)

ghost

04-30-2009 05:03 PM

Oil Questions

I was wondering how heavy and oil everyone uses, winter & summer.

swartlkk

04-30-2009 08:23 PM

Vehicle specs??

For a small block, 10w30 year round should be perfectly fine. 5w30 for winter if conditions are particularly harsh.

There really is not much need to go heavier.

Johns1987Blazer

04-30-2009 10:33 PM

lower mileage= 5w30
higher mileage= 10w30/10w40/15w40
uses oil heavily= 20w50/30weight

okvortec

04-30-2009 11:35 PM

I've got Penzoil High Mileage since it's recommended for anything with over 75k... 5w30 i believe.. its raining and cold so i'm not going to go look!

swartlkk

05-01-2009 07:30 AM

Quote:

Originally Posted by Johns1987Blazer (Post 213909)

lower mileage= 5w30
higher mileage= 10w30/10w40/15w40
uses oil heavily= 20w50/30weight

Highly dependent on the motor in question... Especially when talking about the heavy weight oils.

ghost

05-01-2009 09:15 AM

Sry forgot, Small block chevy. 5.7 liter V8

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