yamaha 40 autolube

[eoin1981]

hi just looking for advice on the best two stroke oil to use on the above motor also where is the best place to buy it price wise? as im sure theres a couple of quid to be saved
it is a 1994 model
many thanks

[ukprometheus]

it seems to me most people use quicksilver products

[Nos4r2]

Morris aquamax by the 25 litre drum works out considerably cheaper than Quicksilver.

[9D280]

There's an argument that says "any TCW3" type. If it says that on the tin / barrel the basics are met & you won't kill the engine.

The subtle nuances of the varous brands I'll let the Ribnet massive discuss...... Personally I like Yamlube.

[eoin1981]

so i gather most TCW3 oils are good enough and safe enough to use?

[Nos4r2]

Yes, but as 9D280 says, some are better than others.

My premix Yam doesn't like Rock Oil for long idle/low speed periods, but is great on Morris and Quicksilver for example.

[eoin1981]

Can anybody tell me what ratio they use oil at

[spartacus]

Originally Posted by eoin1981

Can anybody tell me what ratio they use oil at

Is the Autolube system disconnected? I used to run my Yammie 40hp at 100:1.

+1 for Yamlube.

[eoin1981]

No it's connected but it does not seem to be using 2 much 2 stroke oil all though it seems to be going like a clock was just wondering what ratio it uses oil at

[9D280]

The actual mix will probably depend on the engine.... Very early Autolubes just gave a nice accurate <whatever>:1. The newer ones vary the oil flow to suit conditions. I believe some will run as lean as 200:1 at idle, and when you are humming along at 5500rpm, it's around the 50:1 mark.

Net result, if you do a lot of slow speed stuff, you will use next to no oil, unlike the premix crews whose plugs get very oily after a while.... Which brings us back to Nos' comments about particualr brands being good for particular situations.