What oil is best? and what ratio?

[jake wells]

I ran a fresh rebuilt and ported saw about half of a tank with lucas at 32:1 and didn't really like how it ran so I yanked it apart to raise the exhaust and the top of the new piston was completely black.

I gave the rest of the quart away.
Never seen anything like that

super air cooled blue bottle man its the shiz.

 

[jake wells]

Any chance that's lead from your gas?

lead has different color than that when burned it is rusty yellow orange color only seen it show up on the spark plugs.

 

[Moparmyway]

Any chance that's lead from your gas?

 

[paragonbuilder]

Damn! I just bought a couple used Stihl blowers. They were running Stihl ultra. That is some nasty smelling crap!


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[bwalker]

View attachment 27538

That's a new one for me. I have seen alot of corrosion issues over the years. But never had aluminum pistons corrode.

 

[Redbull661]

I didn't care for the lucas when I ran it in the 661. It seemed really dry for 32:1.

wonder if the 100LL has something to do with the storage? Or maybe a reaction between the lucas and 100LL while sitting?

 

[huskihl]

I didn't care for the lucas when I ran it in the 661. It seemed really dry for 32:1.

wonder if the 100LL has something to do with the storage? Or maybe a reaction between the lucas and 100LL while sitting?

That's what I was thinking too. Lucas is a semi blend so it has dino oil in it. You'd think that would even protect steel for years. Maybe not so with aluminum though

 

[junkman]

I think the best oil test would be run at night with no muffler cover on ,whichever shoots the longest flame wins .

 

[jmssaws]

I whish I had a pic of the piston crown from a half tank of lucas,nobody would ever use it again. Unbelievable what it did that fast

 

[CoreyB]

Ok so Lucas and Stihl marked off the list. At least no one has made it to red armor or dolmar synthetic yet so I am safe.

 

[huskihl]

I whish I had a pic of the piston crown from a half tank of lucas,nobody would ever use it again. Unbelievable what it did that fast

I thought you posted it here a month ago or so? I remember it being dry and flat black looking

 

[jmssaws]

Ok so Lucas and Stihl marked off the list. At least no one has made it to red armor or dolmar synthetic yet so I am safe.

I always have ran the same oil but I thought I'd try it because it is cheap and my oil is supposed to be bad but that *s-word is junk!

 

[jmssaws]

I thought you posted it here a month ago or so? I remember it being dry and flat black looking

If I did I deleted it from my gallery.
It was just a thin black coat.

 

[concretegrazer]

If I did I deleted it from my gallery.
It was just a thin black coat.

No pic.

I have ran 3 gallons of blue oil so far.
I ported a 660 the other day and after less than a tank I pulled the cylinder to change timing and the new piston was completely black and dry.
I have never seen anything like it,with the other oil i used it would be just a slight wash pattern.

Should it be completely black that fast?

 

[huskihl]

If I did I deleted it from my gallery.
It was just a thin black coat.

The Walmart oil your logger buddies were using- was it the blue gallon jugs of tcw3 or the smaller blue pints of aircooled oil?

 

[junkman]

If it is all black it should be burning the oil .

 

[jmssaws]

No pic.

That was valvoline.
It's not to bad

 

[jmssaws]

The Walmart oil your logger buddies were using- was it the blue gallon jugs of tcw3 or the smaller blue pints of aircooled oil?

Air cooled

 

[jmssaws]

There's a few guys here running lucas without trouble but it's not for me.

Valvoline ain't bad but it's boat oil i recon

 

[huskihl]

There's a few guys here running lucas without trouble but it's not for me.

Valvoline ain't bad but it's boat oil i recon

I asked because wally tcw3 leaves the piston dry and black also