Quaker State, Valvoline

[ryansride2017]

I've read where Texaco and Castrol's synthetics are "not true" synthetics, but what about the other brands that you can buy over the counter at Wal-Mart like Quaker State and Valvoline? Does anyone have lab results from these two brands? [ December 23, 2002, 09:09 PM: Message edited by: ryansride2017 ]

 

[Greg]

they are group III synthetic.

 

[nick778]

Deosn't Vavoline Synthetic also have some Group V esters mixed with the Group III base stock?