UK owners, what oil to use / are you using.

[t140v]

Hi everyone,
My carb is back from RR, have a new air cleaner and spark pug adaptor so I about ready to fire up.
Whoever had the bike before me has filled the engine and oil tank with a red coloured oil which could be synthetic, the engine would not run properly because the carb was totally wrecked but now I have it ready to go I dont want to damage the engine running with an unsuitable oil.
What are you running on and have you had any problems.
Any advice much appreciated.

Regards Stuart.

[steveuk]

Castrol Classic XL 20W-50

[kettle738]

Castrol Classic XL 20W/50 in the engine sump and oil tank and motorcycle specific 10/W40 gearbox oil in the transmission. (gives the starter clutch an easier time and seems to stop the clutch from sticking)

Also it will be worth watching the other oil thread that has just been started about using two stroke oil in the oil tank; that may throw up some interesting opinions.

Mick........kettle738

[raychappo]

The question of oil always throws up 'interesting' opinions ;D

[plipton]

Red oil.....the last time I saw red oil it was ATF fluid from a torque converter.

For the cost of a few litres of decent runny stuff, I'd say chuck it away and start again.

Not being one to ever stop experimenting (sometimes good, sometimes disasterous) ........ re5rotary.proboards.com/index.cgi?action=display&board=general&thread=1034&page=1

[snowrench]

I got a case of fully synthetic Castrol 20-50w GPS Motorcycle oil that was made in Italy off of craigslist. It is quite red, but seems to work well.
I'm running that in the Engine, Harley Davidson Sportster fluid in the tranny/clutch/chaincase, and conventional Castrol 20-50w cut with a little Marvel oil in the 'injector' oil. I figure the Sportster fluid would be good for a chaincase/clutch/tranny combo that you find in the re5 since that is the way Sporty's are set up. You wouldn't want a hypoid 80-90 gear oil near your clutch plates, although I'm sure the chaincase and tranny would like it.