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Changing 2 Stroke Oil Mix


supersup
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Hi guys , I've been riding a gasgas250 pro since May using Plutoline 2 stroke as per the previous owner. Have read a few forums I have decided to change to Ipone. Not sure whether I should drain the tank /clean out the carb before changing or just mix it up and pour in the tank.  The bike has been running ok but seems to struggle a little at tick over. I have been mixing 80ml/5litres.

 

Any advice welcome.. Thanks in advance

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Very much doubt this has anything to do with the oil or mix ratio

I run my pro on 50:1 without any problems or smoke :thumbup: 

 

Oil brand and ratio seem to be very personal choices, the owners manual is probably the best starting point

Edited by suzuki250
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Kevin will no doubt have experience to back up what he says but I ran Silkolene for many years on a Beta with no problems. I genuinely would like to know what the problem with it might be.

More importantly, when I used Ipone the markings on the bottle were very inaccurate, to the point of possibly being detrimental to the motor on a lean ratio. Notwithstanding that it's a good idea to measure accurately with a syringe or suchlike anyway.

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Kevin will no doubt have experience to back up what he says but I ran Silkolene for many years on a Beta with no problems. I genuinely would like to know what the problem with it might be.

More importantly, when I used Ipone the markings on the bottle were very inaccurate, to the point of possibly being detrimental to the motor on a lean ratio. Notwithstanding that it's a good idea to measure accurately with a syringe or suchlike anyway.

I have been on silkolene for years on Beta and GasGas, and would be interested in his reasons as well or anyone who knows of problems with it!

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Thank you for the replies . When I bought the bike the lady who owned it was mixing 80ml to /5 litres so that's what I carried on with.Do people actually measure the fuel or rely on the forecourt to deliver 5 litres when it says? I have been using a measuring jug for the oil so I know that has been ok. . I'm off for a masterclass with Dougie Lampkin tomorrow so stressing that the bike stays reliable. Wish me luck.

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  • 2 years later...

2 tanks of petrol without any oil in at all run through a 125 GasGas pro before it mildly seized up as reported in a recent post.........and here the oil  has to be special and measured  to within 0.5 of a cc or the engine may blow up.

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  • 2 weeks later...

Hi guys! I am new in Trials and these exact figures makes me smile when I remember how we used to mix the fuel many many years ago. Anyway - when you look at the manual it says: 1.5% of synthetic oil OR 4% of mineral oil which makes 1:25 ratio. I personally think it is bit rich and smoky (chain saw runs on 1:50) but there you are. If you are using mineral oil, there is a cheap and cheerful mixing bottle in Screwfix: 

https://www.screwfix.com/p/no-nonsense-hp-120-2-stroke-engine-oil-mixing-bottle/46908?_requestid=617461

BTW, have you seen a manual for Beta 2008 which would have a maintenance schedule clearly readable and pictures unobstructed by pinky blobs?

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