thought this might be use full


http://www.pqiamerica.com/testresults5w30April2010.html

 

I took that data and analyzed it. Using the optimum performance numbers set by SAE with 10 being the perfect conventional motor oil here is how it breaks down.


7.32 Kendall
7.27 Quaker State
7.27 Pennzoil
7.24 AutoZone
7.19 Advanced
7.15 Proline
7.11 Mobil
7.06 Citgo
7.05 Castrol
7.05 Shell
6.90 Supertech - Wal-Mart
6.90 Exxon
6.85 Valvoline
6.79 Havoline
6.75 SureGuard
6.68 CAM2


Why, yes, it is what I do for a living. I gave all categories the same weight on the belief all ingredients at optimum levels work together to perform perfectly.

 

Ouch, I love me some Valvoline and Castrol...


Quaker State it is, I mean I want the oil that's been tested after it's used in a NYC taxi cab.

 

valvoline is a great oil but just look at how super tech and autozone oil stack up against it..... might have to look into there oil next time

 

Isn't proline that company that had oil product infomercials where they ran the oil through drained it, then ran the engine???

They all meet SAE specs and that's what I pay for. Quaker State has a good rep though.

I used AutoZone in a pinch once...once.