I use Motul in my built engine (not IAG) per the recommendation of the shop that built it.
If it’s actually an IAG long block, they spec Motul 8100 X-CESS 5W-40 (or an equivalent high quality 5W-40 full synthetic) because their bearing clearances are set up for that weight, not the thinner OEM oil.
Motul is a good oil but i stuck with the OEM stuff when i replaced my clutch
I recently switched from the stock Royal Enfield engine oil to Motul 10W40 fully synthetic. The bike feels noticeably smoother and cleaner.
During all my oil changes, I\u2019ve taken a sample and sent off to Blackstone for analysis.\n\nEven after 12k miles, there\u2019s still enough TBN left that I could have continued using it out to 15k miles.\n\nDissolved metals and other elements were still within universal engine norms so it wasn\u2019t like the sample was abnormally contaminated.
Pero nag stay ako sa motul since 2019.
General rule of thumb for mqb cars is if it\u2019s stock, run stock spec oil. If it\u2019s tuned run 5w40. Personally we run Motul 8100 xcess gen 2 5w40 in 3/4 cars.
I run Motul 10/30 in my motor, helps the piston slap on cold start from the forged pistons.
I run 10w40 5100 motul now. on all bikes etc.
Clutch doesn't like the full syn stuff.
I blew up my first motor at the track on Motul.
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