vs
Engine oil IDEMITSU or Pentosin
In terms of oiling, get a sohn adapter so your apex seals aren't being lubricated with crankcase oil, and instead are injected with rotary-specific oil, like idemitsu.
Pros: rotary-specific oil
Subaru OEM oil is Idemitsu 0W-20. I currently use Idemitsu Zepro\* 0W-20, a high-moly formulation from the same manufacturer.
Pros: high-moly formulation
Vehicle:
Subaru
That's the wrong oil. You want the Idemitsu eco gold medalist advanced moly 0w-20, which is basically the same as Mazda oil(Idemitsu makes the mazda oil).
Pros: basically the same
Cons: wrong oil
Vehicle:
Mazda 3
Idemitsu zepro eco medalist advanced moly 0w-20. Basically the same thing as Mazda's oil.
Pros: high moly oils
Vehicle:
Mazda 3
I bought a 5 Liter Bottle of Pentosin SAE 5W-40 Pento High Performance II Motor Oil from O’Reilly Auto Parts for $50.75. This API SN/CF and ACEA C3 Rated Oil complies with VW-Specification 502 00/505 00/505 01 and is Made in Germany.
Pros: meets VW specifications
Vehicle:
Volkswagen Golf
You don't need to add any more additives to modern day oils. You said you will be using Mazda 0W-20 oil? This is one of the best 0W-20 oils on the market. It is made by Idemitsu for Mazda. It has very high Viscosity Index of 221. Most 0W-20 oils are around 170. This means it is one of the lightest 0W-20 at start up. This is what you want in the winter.
Pros: high Viscosity Index
Vehicle:
Mazda
I like pentosin and motul
Vehicle:
Volkswagen Jetta
Pentosin is pretty cheap and good quality, thats what Ive been using the past couple years.
Pros: cheap, good quality
I have a 08 2.5 Been using Pentosin 5w-40 so far so good
Pros: so far so good
Vehicle:
Volkswagen
5w40 pentosin vw 502.00+ oil. Hasn't let me down in any of my motors yet!
Pros: reliable, good performance
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