General Tech Good at troubleshooting? Have a non-specific issue? Discuss general tech topics here. IF YOUR QUESTION IS SPECIFIC TO A CERTAIN MODEL, IT DOES NOT GO IN THIS SECTION.
Sponsored by:
Sponsored by: CARiD

10w30 vs. 10w40

Old Nov 5, 2015 | 4:37 PM
  #1  
Hoopdog9's Avatar
Thread Starter
CF Beginner
 
Joined: Nov 2015
Posts: 1
Likes: 0
Default 10w30 vs. 10w40

Hello. I have a mildly built 350 in a 76 Monte Carlo. I put 10w30 in instead of 10w40. Will this hurt my engine?
Reply
Old Nov 6, 2015 | 12:29 PM
  #2  
SWHouston's Avatar
Super Moderator
 
Joined: Jul 2011
Posts: 1,545
Likes: 1
From: Houston TX. USA
Default

Very likely not.
But, it may lower your oil pressure some to a lot.
Try it, and if it stays over 35 lbs at an idle, you're ok.

Here's a very good article on Oil Pressure:
Classic Inlines Performance Parts - Understanding Oil Pressure
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:27 PM.