[arpad_m]

Originally Posted by CalgaryZL1

I use amsoil, up north here it’s hard to find any selection of Mobil camaro ferry dust

Definitely their loss, not yours

[CamaroRSOnt]

Originally Posted by keep_hope_alive

The snip you shared is for the 4cyl and V6, this thread is specifically for the V8 LT1 and LT4.

The video explains the reason for the dual specification as well as why there are new recommendations. The cliff notes is that it costs a lot of money to get oils certified by the EPA and 5W-30 was the first oil certified. 0W-40 was the next oil certified and the recommendation by the engineers. This timeline means it was likely their recommendation several years prior to being added to the manual, but that's how the business and certifications work. I also feel the new recommendations are in response to some known issues - such as AFM lifters and oil sludge buildup on the intake valves.

Wrong, it specifically discusses the oil for the LT1 which is the standard V8 engine in the Camaro. Dexos1 5w-30 is fine for cars that are not tracked according to the '23 manual, here it is...

[SSShark]

Originally Posted by CamaroRSOnt

Wrong, it specifically discusses the oil for the LT1 which is the standard V8 engine in the Camaro. Dexos1 5w-30 is fine for cars that are not tracked according to the '23 manual, here it is...

You are 100% correct.That paragraph right there says all I need to know. I don't track my car but still choose to go with the SuperCar 0-40.

[cdrptrks]

I'm thinking about doing a 50/50 mix of 0W-40 and xW-50 for my next oil change to get some extra engine protection on track (especially for occasional 100 treadwear 3R tire use) while still retaining better cold start properties and less likelihood of catalytic converter poisoning compared to using xW-50 oil.

[CalgaryZL1]

Originally Posted by cdrptrks

I'm thinking about doing a 50/50 mix of 0W-40 and xW-50 for my next oil change to get some extra engine protection on track (especially for occasional 100 treadwear 3R tire use) while still retaining better cold start properties and less likelihood of catalytic converter poisoning compared to using xW-50 oil.

DEXOS approved means it’s safe for the converters no matter the weight. The weight is what “creates” the premature wear depending on climate ergo 0-40 will always be recommended. If you live and start your car in a warm climate year-round I don’t think it matters. Gm is always trying to cover their ass. Next time you start your car time how long it takes to get maximum oil pressure with the two different weight oils.