Moparmyway
Its just a saw
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Vince, I would be afraid of piston slap on that one ............ were you able to measure skirt clearance ?
661 Oil Test 32:1 vs 40:1 vs 50:1 ?
- Thread starter redbull660
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KG441c
Keith
MM390xp after noodling 5 truckloads of wood. Plenty of oil running Klotz r50 @32:1 with Sunoco 110 /87 efree @ 50/50
Moparmyway
Its just a saw
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Thats how my motors with R50 look.
I havent seen any other oil look like it.
I bet you can wipe that center of the piston with a rag and it will clean up
I havent seen any other oil look like it.
I bet you can wipe that center of the piston with a rag and it will clean up
KG441c
Keith
Hadnt tried it Mopar. Just tore saw down right quick to see it everything was wearing right after putting new piston and rings in. I know this Louisiana heat and humidity like to killed me noodling that much wood up!!!! Lol!!
Moparmyway
Its just a saw
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Any idea of about how much fuel you used for those 5 truckloads of wood ?
KG441c
Keith
It wasnt alot but I didnt pay attention Mopar. Maybe 2 gallons? Dang heat had me delirious!!!
Dave27483
Enthusiasts of the chainsaw
What is your honest opinion on stihl ultra hpI'm gonna run Belray H1R 32:1 no matter what any test "proves".....
I've been inside a **** ton on saw engines. When I pull one down that's been ran on less, or "cheaper" oil, I don't like what I see. Yeah, with my own eyes.
I've used K2, Motul, Mobil 2T, and H1R. They are all great oils. But at any ratio less than 32:1, I'd feel as though I was cheaping out on the level of protection.
Dave27483
Enthusiasts of the chainsaw
You know what's funny mastermind, I used to run 50:1 in everything until I started reading yours and mr snellings post about 32:1 I now run 32:1 and my old 046 magnum definatly feels more powerful that before. As you say it may be the whole ring seal factor. I'm sold on it anyways
KenJax Tree
Terraphobic
The mind is a powerful thing[emoji6]
Ditto here, I used 50:1 for 18 yrs, but I only went to 40:1, and I'm using your oil Chris, Thanks!
Ditto here, I used 50:1 for 18 yrs, but I only went to 40:1, and I'm using your oil Chris, Thanks!
KenJax Tree
Terraphobic
No problem Mike....i'm glad its getting used.
KenJax Tree
Terraphobic
No posts in 2 days?!?! Has everyone finally figured out that 50:1 dyno is the way to go?
KG441c
Keith
32:1 r50 in carb saws and 32:1 r2 or k2 in autotune/mtronics
porsche965
Addicted to ArboristSite
What brought you to this conclusion? Viscosity and adjustments?
KG441c
Keith
Pretty much but Ive learned to keep my thoughts and opinions to myself here . Nothing but a never ending discussion thats runs in circles with no conclusion. That setup is what works for me and what Ive settled on. For firewood cutting Ill probably settle on 32:1 K2 for simplicity
porsche965
Addicted to ArboristSite
Just about any oil will run @ 32:1 without any engine damage when tuned correctly. It is the higher ratios that separate the best from the rest 
porsche965
Addicted to ArboristSite
I've got some K2 to try next.
All my saws seem happy with 40:1, I see no reason to change. It is like using a 165 gr bullet in a 30-06 while some argue for 180 gr and others argue for 150 gr. My ballistic testing showed that bullet construction is more important than wt, so I actually use a 168 gr Barnes.
porsche965
Addicted to ArboristSite
Well heck, I don't have a 30-06. Does that knock me out of the oil thread? lol But I get what you are saying.
After reading about Optimal 2 and having used the original Optimal 25 years ago or so, "whatever it was called then," oil with no problems anxious to see how that one goes too.
At this point I think I have enough gallons of different quality oils to out last my body's capabilities using them all up! I hope not but am getting pretty close!!
After reading about Optimal 2 and having used the original Optimal 25 years ago or so, "whatever it was called then," oil with no problems anxious to see how that one goes too.
At this point I think I have enough gallons of different quality oils to out last my body's capabilities using them all up! I hope not but am getting pretty close!!
