vs
Engine oil IDEMITSU or PETRONAS
I use idemitsu rotary 20w50
I stick to Idemitsu. I have a Sohn adapter fitted, so it's 10-30 Idemitsu in the engine, twice a year and Idemitsu Premix in the Sohn adapter and in the fuel tank.
Pros: idemitsu in the engine
I don’t use the Mazda-branded version, but Idemitsu is my go-to oil in all of our Mazdas
Pros: go-to oil
Vehicle:
Mazda
The 5W30 full synthetic engine oil works the best for a wide spectrum. Its working temperature range is practical for daily use and it costs less than 5W40.
Pros: practical for daily use
Cons: costs less than 5W40
Vehicle:
Mercedes
My giulietta 1.4 MA is still reliable at 130k km. Never had any problems with engine always used recommended petronas oil. Had to rebuild my turbo once (at 120k km) it had very little play that made my car burn some oil.
Pros: reliable, good engine
Cons: turbo rebuild needed
Vehicle:
Alfa Romeo Giulietta
Mileage: 130000 km
Idemitsu is the only premix and engine oil I’ll use ... you can order it for a good price from TREx performance out of NJ and he will ship
Pros: good price, easy to order
The oil was Idemitsu Synthetic 0W-20 with 12.5k miles on it. Once again, trace metals and flashpoint were within normal range. I also ordered a TBN to measure the amount of additive left and that showed there was still plenty of active additive remaining.
Pros: trace metals normal range
Vehicle:
Mazda 3
Mileage: 12500 km
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
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