I'm not sure if this is cheap or not, but I bought some Mobil 1 0w-40 today at Walmart for $6.37...I was there buying bulbs for my low beams that seem to keep going out every 2-3 months...I got the Sylvania H7 ultra something???They didn't have Silverstars for my car...I was going to try those out after Montana recommended them... Let me know if you think that was a good deal on the oil