Engine Oil

2001 CHEVROLET ASTRO
117,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
LROBINSON2011
  • MEMBER
  • 1 POST
I recently did an oil change on my 2001 Chevy Astro. Instead of using the manufacturer recommended oil, I used 10W 40. According to the owners manual this will cause engine damage. If this is true what type of engine damage could result from using an oil not recommended by the manufacturer.
Jan 2, 2011 at 4:36 AM
Advertisement
Avatar
ERNEST CLARK
  • ✓ASE Certified Mechanic
  • 1,730 POSTS
  • ASE Certified Mechanic
No engine damage will occur. The weights are so similar there's not much difference. If you're in extreme cold, a thiner oil is good, in extreme heat thicker is better. But 10W40 is a middle ground that'll be good in both.
Feb 11, 2011 at 1:34 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.