What oil is best? and what ratio?

[Magnumitis]

Yeah i suppose it could, but enough to create rust? I guess if it sat for a while.


Floppy hat FTW!!!

Not so much create rust, but the possibility is there. Some oils may prevent rust from forming better than others is how I read it

 

[Magnumitis]

Few gallons of benol 40:1View attachment 22154

That's similar to how some of my pistons looked while running Stihl oils. I haven't checked any of them since switching to Lucas oil at 40:1.

I suspect it has as much to do with the fuel and tuning and running habits as much as anything.

 

[Keith Gandy]

I'd say that's why.
It's burning all of it

Kinda what I suspect too. Im interested to see what Kevins 661 does with straight kl200 compared to his mix he has been using. Im gonna predict he will like the kl200 better and that his saw runs better

 

[Moparmyway]

Kinda what I suspect too. Im interested to see what Kevins 661 does with straight kl200 compared to his mix he has been using. Im gonna predict he will like the kl200 better and that his saw runs better

If it runs any better than it does now, I might just start farting golddust and plum crazy purple plops

 

[jmssaws]

The piston crown should look just like mine.
If it doesn't your not burning it

 

[Moparmyway]

The piston crown should look just like mine.
If it doesn't your not burning it

Mine is still running fat-pig-stinking-rich at 14,400 ........... I've turned it down to 14,000 with this new cylinder with more blowdown

 

[Keith Gandy]

If it runs any better than it does now, I might just start farting golddust and plum crazy purple plops

lmao!!!!

 

[Magnumitis]

The piston crown should look just like mine.
If it doesn't your not burning it

So I was doing something right?

Gotcha. I've had some fellers tell me they should be clean and be able to see machine marks. I mark that up to being too fat.

 

[paragonbuilder]

Few gallons of benol 40:1View attachment 22154

That looks like my thumb...[emoji2]

 

[jmssaws]

So I was doing something right?

Gotcha. I've had some fellers tell me they should be clean and be able to see machine marks. I mark that up to being too fat.

If it's clean it's to fat or it can't burn your oil.

 

[mdavlee]

Seeing the wash isn't bad. If the whole top is clean it's way rich.

 

[KenJax Tree]

 

[jake wells]

amsoil is wrong i got a mower that specs a TCW3 so i could run either saber outboard or hp injector in it.

 

[bwalker]

Few gallons of benol 40:1View attachment 22154

What's the rest look like.

 

[bwalker]

amsoil is wrong i got a mower that specs a TCW3 so i could run either saber outboard or hp injector in it.

You can run a low ash FD type oil in a mower, you just end up fouling plugs more often and having more deposits to clean off the head. OTOH with a TCW3 oil you typically have more exhaust port and muffler deposits to de-carbon.

 

[bwalker]

amsoil is wrong i got a mower that specs a TCW3 so i could run either saber outboard or hp injector in it.

There is alot wrong with that chart...

 

[CR888]

Port shape has a lot to do with deposits, dead spots where it eddies build up. Where the carbon builds up is a great place to start as far as modifying the port shape to improve flow. Some poor designs will accumulate carbon run on the cleanest oils where as a better shape can run castor with little build up at all. You see this often if you look closely, many blame oil for what is a poor port design/shape.

 

[Keith Gandy]

hey guys...need some opinions.

trying to figure out which setup to use for oil test. See what you can tell from these vids. Thanks!

36" 8pin RS full comp 3/8ths

36" 7pin RS full comp .404

7

 

[Moparmyway]

404

 

[KenJax Tree]

amsoil is wrong i got a mower that specs a TCW3 so i could run either saber outboard or hp injector in it.

What mower?

Pretty sure that chart is more recent and wasn't with lawn-boy in mind. And the guys that still run them know what to use.