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Thank you for all the reply guys. I just picked up 1 jug of Pennzoil Platinum 10w30 and 1 jug of Pennzoil Conventional 20w50 today. They didn't have any Mobil 1 0w40 or 5w40, although they did have Delo 15w40 and Mobile delvac 15w40 over there. Now the Delo 400 idea becomes very tempting...

just took a look at the Mobil 1 0w40 and TD 5-40 specs, they're really impressive! both got TBNs like 11-12. are these stuff available in walmart 5 qt jugs? never paid much attentions to the mobil stuff, guess I'll go check them out tomorrow. If they have either, I'll probably try them out...

here are a couple interesting threads: mobil 1 blend mobil 1 blend 2 it's from a fellow WRX owner. basically he was mixing Mobil 1 10w30 w/ 15-50. What do you think? btw, the M1 diesel 5-40 looks interesting

Thanks for the replies. Boutique oils are nice, but I want to stick with something readily available at walmart. yeah, I know that w/o a used oil analysis you can't say anything for sure, but from the few used oil analysis done on subaurs so far, the lighter oils do lose viscosity. This is...

Hi guys, first time posting here: Location: Los Angeles Car: 2004 Subaru WRX 2.0 turbo, 83k miles on the clock. 70hwy/30city. I Very common problems with the WRX engine are oil consumption and fuel dilution. With that being said, I've been running Pennzoil Platinum 10w40 (5k oci) with great...