I know this is splitting hairs, but of the 2 which is the better oil? Both are SP syn-blends that are about equal in price at Wally. Does Havoline use the Chevron Isosyn group II+ base oil?
QS Defy HM vs Havoline HM in 5w-20
- Thread starter umungus1122
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Identical specs and.... Identical additive package too...
Both have around 160-200 ppm of molybdenum 100-130 of boron and around 1000 to 1200 calcium and 300-500 of magnesium.
Literally flip a coin. Both are very good oils for the price. I have run both.
Both have around 160-200 ppm of molybdenum 100-130 of boron and around 1000 to 1200 calcium and 300-500 of magnesium.
Literally flip a coin. Both are very good oils for the price. I have run both.
This sounds about right. As for the Isosyn question, nobody knows and Chevron won’t say either. It’s not that important anyway.
Both are decent oils.
I was gonna run the Defy in my classics. Can you still get it?
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- Jul 14, 2020
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Good question, I haven't seen it in several years. I liked it for my classics also.
Two approved, licensed and certified run-of-the-mill oils from Shell and Chevron. Splitting hairs indeed. Use either with confidence. 
The Havoline HM 5w20 is available at Walmart in the 6 quart smart change box for $15.47.
Isn't "Isosyn" just Chevron's marketing wank saying that they use hydrocracked basestocks refering to the catalysed wax hydroisomerization process, from what I've been able to ascertain Isosyn refers to "grp II+" and "grp III" base stocks.
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