theboss
Power User
There was probably some king of promotion, I bought some 2 years ago (it was 0w40 at the time) and I did pay more at that time. I bought enough this time to make oil change on the ZR1 and the GS for the next 2 years. I already had Mobile one 5W30 extended performance in stock, I will use it in the C5. Second best deal was in fact Amazon at 86$ including shippingJust checked today and Rock Auto want $103.00 CAD for 6 quarts delivered to my location. A couple of weeks ago it was $86.00 delivered from Amazon. Although the price does vary from time to time. Too expensive no matter how you look at it .