Funny, when I first started to drive in the mid 70's my dad taught me to maintain my car (junker though it may be.) He always insisted on Quaker State Oil and Fram Oil filters. Well after a couple of years working in the automotive world, I knew for a fact that dad was wrong. Both Quaker State Oil and Fram filters were has-beens. Castrol GTX and WIX filters were where it was at. Then in the pursuit of better, I moved up to Mobil 1 oil and Wix filters. Next step in the parade was Amsoil oil and Amsoil filters. (Always striving for the perceived best). And I always changing the oil every 3000 miles no matter how much it cost. Now at this stage of life, I actually have learned to pay attention to where I am spending my money and am looking for real value... I bought 5 quarts of Formula Shell and a filter at Pep Boys for $9.99. Coupled this with my wifes new HHR with the GM OLM. Got great resuts on a used oil analysis at 7500 miles! For almost nothing! SOPUS seems to be making some great products! What else does SOPUS make? Hmmm. Quaker State. Got some Quaker State Ultimate Durability for free on a FAR and some 2 for 1 Fram Ultra (that look like awesome filters) at Pep Boys. I think this is an awesome value. Great oil with freat filters. Quaker State and Fram.. I'm going 10K on this combo. What??? Wait a second! What happened? I am back where my dad started! Fram ans Quaker State! LOL! Thanks Dad for your wisdom! "Miss ya".