I saw these products in an Autobarn store and wondered if anyone has used them. They had a 'full synthetic' for $4.99 and a dino for $2.99 a quart. I would have thought that this was the stores bargain brand but they had Wolfs Head dino for $2.49 a and WH full synthetic for $5.49 a quart. I think I would use WH dino before Smitty's. I did pick up a couple of gallons of PEAK Global full strength A/F for 12.49 each. PS: This is the website for Smitty's... http://www.smittysinc.net They don't have any PDS listed unfortunately.