quote:A few years back, Esso ( imperial oil ) produced all the lubricants for Canadian tire. Esso still produces a line of gasoline synthetic oils, in the viscousities 5w30, 10w30 and 5w50. They are PAO based lubricants like they were before. They haven't moved to group III. I know on this forum some people have concluded that Shell now produces the lubricants for Canadian tire, but has anyone found any proof that this change was made? Shell doesn't even make a 5w50 synthetic, so I'm not sure where this theory is coming from? Also regarding the product being a group III, is this only theorized because of the belief that canadian tire now uses Shell to produce the product, and shell moved to using group III oils? Canadian tire also sells a diesel oil (0w30 synthetic blend), that is rated CG-4. This product was really ESSO's XHD diesel synethic blend. Both products are only rated CG-4, and have not been updated. Here also Shell doesn't have a similar product. I think this is still the ESSO product. I believe Canadian tire has picked up another supplier for its cheaper autolab oils, but the main products, I still are create by Esso/imperial oil, since the specs for the products still match the line of imperial oil products.
Originally posted by Patman: Does anyone there that runs 5w50 do oil analysis on it? Up here the only 5w50s I know of are Syntec and Canadian Tire synthetic, but both of them are group 3 oils.