SuperTech Syn Blend HM @ Walmart

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2,602
Location
The Tropics of Antartica
Has anyone been using the Synblend Supertech oil ? They have a newer car 5w-30 and HM 10w-30 and 10w-40 . I noticed it said on the bottles it used seal conditioners/ seal cleaners but specifically they were harmless for use in newer cars . I presume this stuff is new on the market and it's like 1.37 a quart , cheaper in the jugs .
 
Messages
3,660
Location
St. Charles County, Missouri
In comparing this to Pennzoil blend 10w30: ST has lower pour point -48 (c or f?) v, -33(-27) for Pennzoil. ST has higher VI 142 v. 136 for Pennzoil. Pennzoil has better HTHS 3.1 v. 2.94 for ST. I'm always perplexed that ST has a lower pour point for its 10w30 than it's 5w20 or 5w30. Might be that Warren blends from widely different sources depending on what it can pick up.
 
Messages
1,181
Location
NJ, USA
I used the ST 10w-30 HM in my wife's '96 Taurus. At about 70,000 miles the car wasn't exactly "high mileage" but I just wanted to try the ST oil. I didn't do a UOA but the car ran fine, started fine, didn't consume any oil and frequent checks on the dipstick showed it was maintaining a sort of dark honey color. The oil went in right around October (I think) and stayed in most of the winter after we gave the car to my dad. Sorry I can't report UOA numbers.
 
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