vs
Engine oil OEM Mazda or RED LINE
I switched to Redline 5w-40 at my last oil change, just barely into my second round of it now. So far so good.
Pros: so far so good
If you're looking for high moly content, I like Redline oil. Google it, there's tons to read on Bob is the Oil Guy alone. That, as well as Motul, have been great in my 2.0T which is pretty hard on oil.
Pros: high moly content
They should be using 0W20 full synthetic oil (not synblend crap). Its not going to hurt running the 5W20 in it instead but next time mention it at write up. Mazda claims benefits such as better cold start protection and better efficiency among other things.
Pros: better cold start protection, better efficiency
Vehicle:
Mazda 3
X2 on the Redline. I use this and i'm very happy with it.
Pros: very happy with it
They also have a race blend for better protection.
Pros: better protection
With Red Line you really have to look beyond the grade on the bottle. They will always recommend the thinnest kinematic viscosity oil because they have such a high HTHS.
Pros: high HTHS
Redline appears to be more interested in using the best additive package to make the best oil, not having to use pre-tested additive packages that may be geared more toward fuel economy.
Pros: best additive package
Cons: not API-approved
The zinc and phosphorus levels (ZDDP) is much higher in the redline. Iron per 1000 miles is much better. Viscosity retention and flashpoint are much better also.
Pros: higher ZDDP, better viscosity
I love red line, search for my UOAs... i've tried most of the top teir vw502 approved oils in the FSI (Motul xcess, motul specific, total energy), and they don't even come close to touching red line with regards to longevity / performance.
Pros: longevity, performance
Vehicle:
Volkswagen
4 qts Redline 5w40, 1 qt Redline w40 Race Redline blows away the competition... Lumps of ZDDP and Moly with the Race oil mix, fuel dilution pretty much disappeared, and viscosity/flashpoint are well within reason.
Pros: fuel dilution disappeared
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