Mobil 1 10W-30

[Rob53]

After doing some poking around on the internet trying to get an official yea or nay on Mobil 1 10W-30 for my SS Camaro. The bottle shows a GM6094M designation. I finally came across the GM approved engine oils list at:

http://www.gm.com/corporate/responsi...ngine_oils.pdf

It is current as of June 1, 2009 and lists Mobil 1 10W-30 as a GM4718M registered product. Other High Performance Engine Oils are also listed. So if you want to check for sure if what you want to use in your new Camaro is "warranty safe," this list on the GM website should answer that question for you. Just posting this as an FYI. Doing my first oil change @1400 miles using Mobil 1 10-30.

[Banshee]

I wouldn't use anything other than 5w-30 in my engine. 10w is unnecessary and will reduce hp. 5w is just fine.

[Paperer]

I'd use 10W in a higher mileage car, like my '02, but, I'd stick with the 5W for the 2010.

[Mr_Draco]

Originally Posted by Banshee

10w is unnecessary and will reduce hp. 5w is just fine.

I gotta agree with Banshee on this. The only advantage 10w has over 5w is it has better viscosity at higher start up temperatures. Unless you live in an area that routinely sees 120+, you won't see any change between 5w-30 and 10w-30 as the 30 designates that they both have the same viscosity at running temperatures.

Also with winter coming, unless you plan on doing another oil change in 2 months you're better off sticking with 5w-30 as 5w has better viscosity at colder temperatures. Running 10w in winter can cause engine damage until the oil warms up.