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Reply to "5w20 vs 5w30"

Hi Buster
!! expectatiom
Known for some time (see below) but if you take the reverse of CAFE it's additional bhp. Additional bhp is a big seller and easily linked to Motorsport even bigger seller. The logic to drop viscosity is easy.

You posted on C Edge R&D - 0W30 is used and also 10W60 also a go figure! or perhaps discuss!

The ford modular has been mentioned and in UK this can be specd from 0W30 to 15W50 no surprises if one has been tweaked.

My perception is that the US is mineral and 3K based, this is economic, but GIII is Dino classified, wheras Europe is Synth (inc GIII) based with longer OCIs. These economics dictate the perception of viscosity.

CAFE has no interest to me, only interested in oil performance.


Pro R 0W/20
Max power 134.4 BHP @ 9750 rpm
Torque 78.9 ft-lbs @ 7400 rpm

In other words, 3.7 BHP/2.9% increase from GTI to Pro S, a 2.8 BHP / 2.1%
increase from Pro S to Pro R, or 6.5 BHP / 5% overall. Not bad, just for changing
the oil, eh? More to the point, a keen bike owner would have paid at least
£1000 to see less improvement than this using the conventional approach of
exhaust / intake mods, ignition re-mapping etc.

Am I recommending 0W/20 for high performance engines? Well, perhaps not! The
Pro S 5W/40, which is a 'proper' PAO/ESTER shear-stable synthetic, will look
after a powerful engine better than a heavier viscosity 'cave at the back'
conventional oil, and provide a useful few extra BHP. (On the other hand,
the 0W/20 was very thoroughly developed to give good anti-wear protection.
I think I was on 'Blend 6' before Kawasaki was happy with it!).
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