Engine oil OEM Mazda or MOTUL

MOTUL Engine oil

My engine builder recommended what was 300v Power 5w40 at the time and is now 300v Competition 5w40 due to it holding up the best to fuel dilution from ethanol.

Pros: holding up best to fuel dilution
Vehicle: Subaru
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MOTUL Engine oil

Motul is the gold standard - the IMSA cars you see with Motul badges really do exclusively use Motul. The shop I work with uses it in classic racing cars that are worth tens of millions.

Pros: gold standard, highest quality
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MOTUL Engine oil
silly-mahanta
  • Exhaust smoke:
Rating 1.0

I used the Motul 10w50 fully synthetic. After running it for a few months I happened to check oil level and I was shocked to find out that 500ml had disappeared. This never happened on the stock Royal Enfield oil, nor with the Motul 5100, so I was not used to keep checking oil level religiously. But now I do.

Then I checked YouTube reviews to see if others report oil evaporation or burning off. And yes lot of youtubers report it, but still recommended it!

How can you recommend an engine oil that evaporates or burns off, even if it gives slightly better performance? It's ridiculous.

Pros: slightly better performance
Cons: oil evaporation or burning
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