22-11-13, 11:03 PM
Having read this thread yesterday I asked my local Yamaha dealer today whether they stocked Yamalube brand fuel stabiliser. "No" the guy said but they did have Motorex. I paid £5-99 for a small bottle-(125ml?)-it states this will be sufficient for 30Litre of petrol so will scale down accordingly to suit my tank size.
In my experience-old leaded fuels rarely gave problems-other than leaving bike untouched for long periods when the carb float bowls would sometimes get gummed up as the more volatile fractions in petrol evaporate leaving a sticky residue like varnish.
From the photos it almost looks like some biological process is happening in the fuel-as said-could be due to the ethanol content. Havent had this happen to me yet and it looks like a right palaver to rectify so am going to try the Motorex-cant hurt can it? Less pain than stripping 4 carbs :lol
I have found some bike engines that have had modern unleaded left in for 2 or 3 months reluctant to start-is this due to the more volatile fractions evaporating?-if so we will be resorting to old ways like squirting ether spray into air intakes-the way they used to start old diesels in extreme cold conditions! :eek
In my experience-old leaded fuels rarely gave problems-other than leaving bike untouched for long periods when the carb float bowls would sometimes get gummed up as the more volatile fractions in petrol evaporate leaving a sticky residue like varnish.
From the photos it almost looks like some biological process is happening in the fuel-as said-could be due to the ethanol content. Havent had this happen to me yet and it looks like a right palaver to rectify so am going to try the Motorex-cant hurt can it? Less pain than stripping 4 carbs :lol
I have found some bike engines that have had modern unleaded left in for 2 or 3 months reluctant to start-is this due to the more volatile fractions evaporating?-if so we will be resorting to old ways like squirting ether spray into air intakes-the way they used to start old diesels in extreme cold conditions! :eek