classic motorcycle forum

Motorcycle Discussions => British Bikes => Topic started by: workmate2 on August 12, 2005, 03:33:10 PM

Title: Petroil Mix
Post by: workmate2 on August 12, 2005, 03:33:10 PM

I have an old Francis Barnett Cruiser with a Villiers 17A engine (1935 ish).  I know the mix is 16 to 1 but what type of oil should I use? Is modern 2 stroke oil suitable?

Title: Re: Petroil Mix
Post by: L.A.B. on August 12, 2005, 04:02:49 PM

No problem at all using a modern two stroke oil that's suitable for petroil mixing, you could probably reduce the ratio of oil to petrol as well, especially with a modern synthetic oil, but of course that's your decision.

Title: Re: Petroil Mix
Post by: workmate2 on August 14, 2005, 06:29:59 PM

Thanks...  
I assume that lead free petrol is OK also?

Title: Re: Petroil Mix
Post by: L.A.B. on August 15, 2005, 02:45:06 AM

Using ordinary unleaded petrol should be fine as two strokes don't really need leaded petrol anyway (no valves).
Spark plugs can last longer too!

Title: Re: Petroil Mix
Post by: old_Norton on August 21, 2005, 03:07:13 PM

My 175 Bantam used to overheat on recommended oils at 24:1 I tried MOTUL 800 synthetic oil (same ratio) and she seems to run a bit cooler.