Rock oil racing castor oil.

[corrado]

This stuff reads well and was on sale at Wicksteed for £7 litre.

http://www.rockoil.co.uk/cm/pdf/rock_oi ... d_race.pdf

What's the downside to castor oil (thinking particular for racing use)?

[soullad]

Tried a tank full of Castrol 747 (semi - synthetic with castor oil) in my TS1 the other day. Ran fine, no problems. Smelt great too. The way I figured, if its good enough for race scoot engines that rev to 10,000 + then I may as well try it. No idea how it would handle over time thou, or on say a 200 mile motorway rally?

[MarkH]

Unless you strip down your engine on a regular basis I would say don't get in the habit of using castor. It gums things up eventually.

[TheSeeker]

It was good enough for Bentley

http://en.wikipedia.org/wiki/Bentley_BR1

Ben

[tarmac tickler]

use castrol R in the ""tarmac Tickler" works brill,, if you use it for everyday use the only down side is if it drops to freezing point it looses its lubricating properties, its like riding with no oil in the petrol,,DO NOT LET IT FREEZE UNDER ANY CIRCUMSTANCES,, get the picture,,, thats the only reason i dont use it on the road,,

[joee]

always used R in kart engines ...but you will have to strip the engine more regularly as it gums stuff up...

[goldeneye]

is "R" not hydroscopic?, and attracts moisture if left in engines too long? was that not the reason for the frequent strips, and the freezing advice?

[gadgetman]

Castor oil is as good as it gets as regards lubrication even better than modern synthetics but forget about it for a road bike - as has already been said it needs to be kept above freezing but the main problem with it is that once mixed with petrol it begins to degrade and has a very,very short life and should not be left in the tank even for 24 hours which means draining both tank and carb after every outing and disposing of it . It must never ever be mixed with other types of 2T oil either. If you are into tiny 2T model aeroplanes though with tiny fuel tanks it's perfect.

[corrado]

Sounds good for race use then as we put as little fuel mix in the tank as we can get away with and drain it off and clean out the carb afterwards. Won't premix it until just before a race.

[joee]

Sounds good for race use then as we put as little fuel mix in the tank as we can get away with and drain it off and clean out the carb afterwards. Won't premix it until just before a race.

If it's for race use i'd definitely use R30 then..

the main reason we used it in karts was because it enabled you to read the plug really accurately...quite important in a motor revving to 19000rpm...and the way it lubricated the bearings etc ...

Plus castrol in a two stroke is an amazing smell!!

The two main ones people use(d) were R30 and shell M...lots go off and try new fangled synthetic ones and come back.