What are acea specs on 5w30 ST syn? PP/PU gtl are both a1 b1 a5 b5. I know that does not always matter but it doesn't hurt either. I have reaped the rewards of Menards selling PP for 6.47qt with 2$ rebates and its hard to walk away from that. Also with DI engines and now mods on my car,noack is a concern. I ran ST syn in my 95 tacoma without issue in 10w30 and it was okay. If my budget and fuel allowance alters I might go for QSUD. Right now Napa has their syn for 3.49 and though price is right I wouls still run ST over Napa. I do run the Napa syn when I only want to do a 2500-3000 mile oil change and thats it. Both oils scream for a shot glass of Mos2 as moly is low on them both. I think in a non warranty situation that supertech is worth looking at.