Cujet, here are some pics of cmr5h which are one level hotter than oem cmr6h. Four hours usage mostly wot and 50:1 Saber. I'll follow up later with oem recommended plug.
Schaeffer Oil and Stihl 4-Mix .....
- Thread starter lilspenny
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and here are 3 pics of cmr6h which are oem. Both are acceptable, and both after 4 hours of modtly wot. Gonna stick with oem cmr6h because there is a noticeable heat increase with the hotter cmr5h. The reason, as I see it, that I was having carbon issues was the oem spec gap of .020. Bumped to .023 and it was much better. Tried .025 and noticed a little miss. All pics with Saber 50:1. I do realize that 4 hours isn't much time, but it is enough to spot carbon that is building. The shiny hard black carbon on the bottom of the hotter plug was never present on the oem cmr6h. But, notice the tan insulator on the oem cmr6h. Whiter on cmr5h.
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Yes indeed. I bumped the VP to 40:1 and got a black sparkplug. I've compared many oils to Stihl Ultra's viscosity and 710 is close but a tad thicker if memory is right. I will buy some. I have been satisfied with Saber at 50:1 since I gapped to .023. Not good at .020. I realize I am searching for perfection and I probably won't find it. I'm close with the Saber. I'm thinking 55:1 or 60:1 would be closer but I like the extra lubrication. Luckily I like the smell! I appreciate the feedback from all of you! I never had the time to do this stuff when I was a full-time landscaper. Oh, I'll go back to my other thread but the Schaeffer's 7000 at 36:1 was the worst insofar as carbon. I checked after one tank and wasn't willing to continue. Plug was really black. Gonna give that stuff to my marina.
The CRM6H looks perfect. The CRM5H plug is too black at the base and has typical properties of a hotter plug.
Don't run higher ratios than 50:1 even with the Saber, which is very thick oil. Don't sacrifice lubrication for cleanliness. It's much easier to open and decarbonize the cylinder, piston along with the exhaust port than to replace crank and/or rod bearings.
That's how it should be. It shouldn't be white.
Don't run higher ratios than 50:1 even with the Saber, which is very thick oil. Don't sacrifice lubrication for cleanliness. It's much easier to open and decarbonize the cylinder, piston along with the exhaust port than to replace crank and/or rod bearings.
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10-4 on that. I concur. That hotter plug, the cmr5h, looked like porcelain on the end of the threads. I give a lot of credit to Amsoil. I am not an Amsoil fanboy but the Saber has won the contest so far. It smells relatively strong but that's fine because it really has a nice, distinctive 2-stroke smell that reminds me of the way Mercury outboards smelled in the 60's while running Formula 2. Anyone know how Motul 710 smells? I appreciate you guys who have assisted with comments.
I'd like to see it a little more brown myself. When jetting snowmobiles a 20f temp. swing in Mikuni carbs was a one jet size up/down change to be safe depending on ambient temps. Carbon is less of an issue vs burning a piston. Lean is mean so being a little on the fat side is the safe side especially in cooler fall and winter temps.
Fuel not oil cools pistons. I've been burning Klotz at 40:1 in my OPE for years, even a 20 year old cheap Poulan saw is still running.
Fuel not oil cools pistons. I've been burning Klotz at 40:1 in my OPE for years, even a 20 year old cheap Poulan saw is still running.
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That's a good thought. I'll get a cooler plug and see how it looks. These 4-mix engines are definitely not like a chainsaw or even a 2 stroke trimmer. They won't gobble up just any oil for sure. I am surprised that the Saber works. I used 4 gallons of Red Armor with the oem plug gap at .020 and hate I didn't inspect the plug because it
made a tarnished mess on my piston. Red Armor ran great and I will be trying it again with the .023 gap. I hope it works because ny Echo dealer, Dixie Auto, is super. Thanks for your input!
Kinda curious if you ran Red Armor with a .23 gap and how that looked. Also, any updates on the Motul 710? Thanks for all this info !!
I did run the Red Armor 50:1 with .023 gap and unfortunately it just runs dirtier than the Saber. It did a little better with the hotter cmr5h plug but I decided to not go that route since the Saber did better with the oem cmr6h. Don't know why my br800 is so picky. I think most people would have been fine with the RA and oem plug because it ran great. In fact, fantastically. I don't know if the clingy nature of RA was too much, or what. I really wanted it to work out, but it didn't look good. My fs131r did fine with RA. It's really a delicate balancing act.
No, I have not yet tried the 710 but I will. I look forward to it. It really doesn't take long to get a pretty good idea of what's what. In fact, I waited too long with RA with the .020 gap and tried to clean it with Quicksilver Power Tune but that didn't help much. Saber has helped some. Saber and Honda HP2 have high viscosity and both leave a nice film everywhere, including piston crowns, but the HP2 leaves some spooge and a sooty plug. One reason I have not yet tried the 710 is because I read that it stinks. lol I will try it and report. So far, lucky for me, the Saber is my favorite smelling exhaust, and that is important to me because it reminds me of being a kid in the 1960's and smelling Quicksilver Formula 2 smoke.... and I do mean smoke. Thanks for your reply!
Thanks for all your work! It's amazing !! Do you mix the Saber 50:1? I just added a BR 800 X .... been 100% Echo w/ Red Armor before. A couple of 770 T and an 8010 I sold again after 2 years because the 8010/9010 are only good for one thing. Echo doesn't offer a blower having the power of the 800 with the ability to focus the airstream. I ordered some 710, which is cheap, but I might try the Saber depending on your results. Thanks again man!!
I started Saber at 50:1. Honestly, I think that's fine but Saber viscosity is pretty thick. 64:1 actually works (runs) better for me. I was very slow to go thinner than 50:1 because, well, there are many out there doing chainsaw videos pushing 40:1 or even 32:1. But, running Saber at 50:1 the oil smell in the air just made me think I could go thinner. Also, I dug up several old posts from 80:1 users and messaged those guys. They're still running 80:1 and have been... one guy has a 7 yr old br600 that he uses daily, still at 80:1. So, I tried it, looked at my valve springs, and all is still coated just like 50:1. If it was 100 degrees I might try 50:1 again. Might.
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I ordered some Saber oil ... will run at 60:1 first and adjust plus set the spark plug at 0.023. My brand new BR 800 X MAgnum feels kinda sluggish with Red Armor at 50:1. THese tests of yours are also with a BR 800 X, right? Happy TUrkey Day to you and yours~!!
Yes, BR800x bought in November of 2024 and given to me as a gift. I went to 64:1 because that's a simple 4oz per 2 gallons ans I use a cough syrup bottle from my pharmacist as a measuring bottle. I verified it's accuracy with water and scale.
Makes complete sense! Will do the same. THANK YOU for all your discovery work and great advice here !!
Side note ... first fill with Saber at 64:1 ... also pulled the OEM spark plug to check the gap. To my surprise the gap is .024 from the factory
wow, was it a cmr6h? My fs131r came with a Stihl branded plug.
Yes! A NGK branded CMR6H
I wondered if you have ever considered testing MotoMilk 2-stroke oil. It has an Amsoil-like cult following in some places.
This is going to sound crazy, but it works perfectly.
Try Evinrude XD100. Yes…marine oil, but if you research the history, it was engineered to be fully synthetic and run at 100:1 in hard use outboards. It had super strict euro requirements for clean burning and it ended up being a rock solid 2 stroke oil for just about everything.
I ran it hard, in multiple saws and it was almost zero smoke.
Try Evinrude XD100. Yes…marine oil, but if you research the history, it was engineered to be fully synthetic and run at 100:1 in hard use outboards. It had super strict euro requirements for clean burning and it ended up being a rock solid 2 stroke oil for just about everything.
I ran it hard, in multiple saws and it was almost zero smoke.