Post this over in the HCH forum also but I have a TCH also and thought I would post it here:

CheckAuto is running a deal right now where you can pick up 6 qts of Synpower 5W20 for 5.94 using coupon code 7145345. This is nothing on their website showing this. The only way you know is if you go by one of the stores and see the AD in the window. There is also a $2.50 MIR (if you can find it) where you would make $8.00 on this deal or buy an oil filter and make a few $$$$. I will see if I can find the MIR online (so for no luck) but some of the stores have the rebate form. Get out there and get the oil fast.