It has been posted here that in order to meet the ILSAC GF-4 spec, a mineral 5w30 would have to have some degree of group II+, III, or even IV to meet the spec, it couldn't do it with just II. How do really cheap 5w30's that meet this spec do it?
The main one I am thinking of is Canadian Wal-Mart Tech 2000 5w30, which does claim to meet this spec, and is know to be made from re-refined group II oil. Would Safety Kleen further process some oil to produce small quantities of group II+ or III to do this, or would they blend in someone else's?
I can understand if oils like Pennzoil or Valvoline do this, as they charge $3.00 - $4.00/litre here. But at $1.99/litre, how does Safety Kleen do it?
Canadian Tire has avoided that entirely; there $1.99 oil, Autolab, only meets API SL - it doesn't even meet GF-3!
The main one I am thinking of is Canadian Wal-Mart Tech 2000 5w30, which does claim to meet this spec, and is know to be made from re-refined group II oil. Would Safety Kleen further process some oil to produce small quantities of group II+ or III to do this, or would they blend in someone else's?
I can understand if oils like Pennzoil or Valvoline do this, as they charge $3.00 - $4.00/litre here. But at $1.99/litre, how does Safety Kleen do it?
Canadian Tire has avoided that entirely; there $1.99 oil, Autolab, only meets API SL - it doesn't even meet GF-3!