View Single Post
Old 04-07-2015, 10:30 PM   #3 (permalink)
Isaac Zackary
Full sized hybrid.
 
Isaac Zackary's Avatar
 
Join Date: Apr 2015
Location: Colorado
Posts: 602

Suzy - '13 Toyota Avalon Hybrid XLE
90 day: 37.18 mpg (US)
Thanks: 369
Thanked 108 Times in 84 Posts
Yep, the "W" cold grade is a bit more flexible than the non "W" number. From what I understand 0W-30, 5W-30, 10W-30 and even straight 30 all have the same viscosity requirements at 212* F (100* C) and 305* F (150* C). But when it's colder is when the "W" grade becomes important.

I have a Chevy Astro owner's manual here with me. It states that for this particular engine 10W-30 is ok for summer use, but not winter use. 5W-30 is fine for all year. But if temperatures are continuously below 0* F then it recommends 0W-30.
  Reply With Quote
The Following User Says Thank You to Isaac Zackary For This Useful Post:
101Volts (12-18-2015)