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What oil is best? and what ratio?

mainer_in_ak

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As promised, I'd report back after one year of personal and commercial use on a cs 590 saw that has been run on nothing but Lucas oil at 32:1 since the saw was new.

The mix fuel has always been 90 octane, a smidgen of mmt, and a smidgen of either strartron or marine stabil.

I'd estimate about 800-900 hrs total time on the saw. Nothing too crazy: walbro 86-587-1 fuel nozzle, base gasket delete, timing advanced, muffler opened up, tuned to 13,200 rpm.

170 lbs of compression at the 1yr mark. No scoring on piston. The thin layer of carbon at the sides of the exauhst port can be scraped away with yer finger nail. The carbon has the consistency of grainy bubblegum.

There is a slight bit of staining near the piston ring.

I will continue to use this oil in my fleet of saws, brush cutters, augers and snowmobiles as it's only $ 9.99 a quart.

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jakethesnake

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As promised, I'd report back after one year of personal and commercial use on a cs 590 saw that has been run on nothing but Lucas oil at 32:1 since the saw was new.

The mix fuel has always been 90 octane, a smidgen of mmt, and a smidgen of either strartron or marine stabil.

I'd estimate about 800-900 hrs total time on the saw. Nothing too crazy: walbro 86-587-1 fuel nozzle, base gasket delete, timing advanced, muffler opened up, tuned to 13,200 rpm.

170 lbs of compression at the 1yr mark. No scoring on piston. The thin layer of carbon at the sides of the exauhst port can be scraped away with yer finger nail. The carbon has the consistency of grainy bubblegum.

There is a slight bit of staining near the piston ring.

I will continue to use this oil in my fleet of saws, brush cutters, augers and snowmobiles as it's only $ 9.99 a quart.

20250311-154612.jpg

20250418-120537.jpg

20250418-115624.jpg

20250418-115947.jpg

20250418-115901.jpg

Screenshot-20250418-123616-Gallery.jpg
I expected to see wear on things
 

mainer_in_ak

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I expected to see wear on things
I didn't. But then I've put 2,800 miles on an Enticer 2, using Lucas as an injector-oil hauling nothing but 16 ft slabs, firewood and a home made trail groomer. The entire rig is falling apart around the engine. But the engine runs like a top.

Then 5 gallons of Lucas 32:1 mix fuel every 3-4 weeks through all my saws, never an oil problem yet. If there's was an oil issue, the constant milling of 16 ft slabs would've shown something.
 
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jakethesnake

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I didn't. But then I've put 2,800 miles on an Enticer 2, using Lucas as an injector-oil hauling nothing but 16 ft slabs firewood and a home mace trail groomer. The entire rig is falling apart around the engine. But the engine runs like a top.

Then 5 gallons of Lucas 32:1 mix fuel every 3-4 weeks through all my saws, never an oil problem yet. If there's was an oil issue, the constant milling of 16 ft slabs would've shown something.
Yeah I believe it would’ve shown itself by now
 

PissRev

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As promised, I'd report back after one year of personal and commercial use on a cs 590 saw that has been run on nothing but Lucas oil at 32:1 since the saw was new.

The mix fuel has always been 90 octane, a smidgen of mmt, and a smidgen of either strartron or marine stabil.

I'd estimate about 800-900 hrs total time on the saw. Nothing too crazy: walbro 86-587-1 fuel nozzle, base gasket delete, timing advanced, muffler opened up, tuned to 13,200 rpm.

170 lbs of compression at the 1yr mark. No scoring on piston. The thin layer of carbon at the sides of the exauhst port can be scraped away with yer finger nail. The carbon has the consistency of grainy bubblegum.

There is a slight bit of staining near the piston ring.

I will continue to use this oil in my fleet of saws, brush cutters, augers and snowmobiles as it's only $ 9.99 a quart.

20250311-154612.jpg

20250418-120537.jpg

20250418-115624.jpg

20250418-115947.jpg

20250418-115901.jpg

Screenshot-20250418-123616-Gallery.jpg
Thanks for the report.
 

Partner

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I've seen tests that mostly rely on friction based on just oil and room temperature
 

HokieJoe

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If you watch til the end, he shows how Amsoil tests theirs…
Yeah I saw that. Most of the video detailed wet clutch oil requirements though. That's fine, but it's not something in which I'm interested. Thanks for the link!
 
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Al Smith

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.I'm not chainsaw brand loyal nor oil and ratio loyal .Currently I buy oil from Menards ,Briggs and Statton labled which goes on sale about this time of the .year .Comes in 8 oz bottles just right for two gallons of mix gas at 32 to 1 ,bought ten enough for 20 gallons of fuel No way would I go through that much in a year usually . I use regular grade gasoline no "true fuel " for me .It's a tool not a Rolls Royce silver cloud .
 

Bjorn

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Cool down, I think MR Montana shoud test this oil, before he say it useless.
 

cus_deluxe

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visited an old mechanic friend of mine recently and we got on the topic of mix oil. he does a lot of snowmobile work, ends up emptying the oil tanks on those quite a bit. he just pours it all into gallon jugs and puts it on the shelf. thats his mix oil, this blackish/greenish goo of random amounts of different injection oil. could be 2 years old, could be 40. if it pours it goes in there lol.
 

pbillyi69

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that's what idid with all of the partial bottles and new bottles when i cleaned up my garage. i had a gallon jug of saber that had about two inches of oil in the bottom and i just dumped all of them into that container. it makes a nice purple gas now. when its all gone i will bye dominator. almost all of them no ultra.....stinky
 

ZeroJunk

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Maybe next week I will find some failure due to oil used rather that no oil used. Maybe. Just not yet.
 
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