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Rb250 oil mixture percentage

Posted: Sat Nov 04, 2017 8:07 am
by Simonwwfc26
3% or 4%
Brand new build
High spec engine
No mileage
What would you guys recommend

Re: Rb250 oil mixture percentage

Posted: Sat Nov 04, 2017 8:42 am
by Toddy
Simonwwfc26 wrote: Sat Nov 04, 2017 8:07 am 3% or 4%
Brand new build
High spec engine
No mileage
What would you guys recommend

I believe AF recommend 4%

Re: Rb250 oil mixture percentage

Posted: Sat Nov 04, 2017 10:31 am
by leigh
I’ve been running an RB 22 for years on 3%. Not had any issues

Leigh

Re: Rb250 oil mixture percentage

Posted: Sat Nov 04, 2017 11:35 am
by Scooterdude
If you read the set up page on the af site it states 4%.

Re: Rb250 oil mixture percentage

Posted: Sat Nov 04, 2017 6:14 pm
by Adam_Winstone
The AF theory is that feeder ports from intake straight to transfers, then directly into bore, means that less mix (also less oil) goes into the crankcase mouth to lubricate the big end bearing. As such, sticking to 4% may still only result in the same quantity of oil making it to the crank as 3% might on a TS1.

Re: Rb250 oil mixture percentage

Posted: Sat Nov 04, 2017 9:04 pm
by Scooterdude
I'll stick with 4% as instructed by Harry Barlow and also Rayspeed.

Re: Rb250 oil mixture percentage

Posted: Sun Nov 05, 2017 11:52 am
by Simonwwfc26
Dan may confirm what % if possible as he built the scooter I own now

Re: Rb250 oil mixture percentage

Posted: Sun Nov 05, 2017 12:10 pm
by Simonwwfc26
Many thanks for advice guys appreciated