putting gas & oil into tank

[mickhodapp]

what is the proper procedure for putting gas & 2 stroke oil into the gas tank when you want to fill up at a gas station that is on the water ? oil first or gas first when you don't know exactly how much gas is in the tank

[beamishken]

I think I'd add some oil before the fill then top up to the correct amount once full then you know the bulk of the petrol is mixed

[mickhodapp]

Good idea,thanks !

[breezeblock]

with our saws I always do oil first

[jeffstevens763@g]

Originally Posted by mickhodapp

what is the proper procedure for putting gas & 2 stroke oil into the gas tank when you want to fill up at a gas station that is on the water ? oil first or gas first when you don't know exactly how much gas is in the tank

you dont need to know how much is in the tank just what you're putting in keep it to round figures so it's easy to measure the oil out. doesn't matter if oil first or last it mixes. i found it better to have two tanks and mix a full tank every time a little too much oil won't harm the engine in anycase.

[mickhodapp]

Thanks for the reply!

[steco1958]

Originally Posted by jeffstevens763@g

you dont need to know how much is in the tank just what you're putting in keep it to round figures so it's easy to measure the oil out. doesn't matter if oil first or last it mixes. i found it better to have two tanks and mix a full tank every time a little too much oil won't harm the engine in anycase.

However if you consistenly over oil, you may end up with an issue

[jeffstevens763@g]

To avoid over oiling having two tanks just top one tank up to empty second tank then re fill get a measuring jug to get the ratio correct. Don't forget on pre mix that the ratio of oil covers the full rev range so at low revs it's over oiled but not an issue with modern oils

[beamishken]

Originally Posted by jeffstevens763@g

To avoid over oiling having two tanks just top one tank up to empty second tank then re fill get a measuring jug to get the ratio correct. Don't forget on pre mix that the ratio of oil covers the full rev range so at low revs it's over oiled but not an issue with modern oils

That's ok unless the op has built in tanks which was my assumption if he's filling up dockside

[jeffstevens763@g]

Originally Posted by beamishken

That's ok unless the op has built in tanks which was my assumption if he's filling up dockside

In that case BK I would always fill with measured oil to fuel just need keep it simple litres wise, to be honest in the old days you avoided long periods of tick over to prevent the plugs oiling up not a problem with modern oil in my
Expeariance so a 100-1 mix fluctuating +or- 5% isnt going to be a big deal I would make sure periodically I ran the tanks very low easy with two tanks.

[Last Tango]

Realistically you're going to have to put most of the oil in first, because if you accidentally "brim it" with the pump it's going to be messy trying to make space for the oil, especially if it's a big tank.