I didn't feel like crawling around on the garage floor to change my own oil and I had a $12 off coupon for the JL, so I took my 09 Malibu in for one of their 15 minute Signature service Oil changes, expecting to get PZ 5w30. Instead they were using Formula Shell in bulk. Nothing wrong with Formula Shell, just surprised since JL advertises PZ all the time. BTW: their price is up to $40 now for a plain old dino OC here in the Memphis area. Absurd.