OK! Got to tell the truth about my oil mix. I use Pennsoil mixed at 40.1 Do I think it's the best? of course I do. Is it the best? How could I possibly know the answer to that. Besides, "The best," is always subjective to many different applications. If I need to know which glue I should use in building a particular part of an aircraft.....I fall back on mt 47 yrs of building in this hobby. If I want to know what "OIL" I should use in my GAS engines, I fall back on RCIGN1, Silversurfer, and rcbugman recommendations. After all..........Those three gentleman probably have ran more gas through these engines, than all the rest of us COMBINED Finally....when I want to know the best oil type and mixture I need to use for a particular GLO, engine. I rely on what Clarence Lee, "RCM" recommends. Bob Laine

I've only ran a couple of tanks through mine. Had to adj. the carb a little. In the report at the Ultralite website they tested an unnamed brand of Synthetic and it didn't fare too well compared to Penzoil Air cooled. But in other tests performed and reported on rcuniverse not all Synthetics were the same, and I wouldn't expect them to be. Some were much better than others.

Have you torn apart any of your engines after running Redline for awhile? Notice any carbon buildup etc?

The local guy who I bought the oil from has been using Redline for about 20 years in racing engines and loves it.

Thanks!

After about a year of hard running they will have developed some soft carbon build up but it's pretty much a wipe away thing if desired. Piston wear has usually only been notable when foreign object injestion has occurred. Not using an air filter means anythng that gets sucked into a carb makes to the inside of an engine, so small scratches happen from time to time. As in any other engine there will be light "scuffs" on a piston where they arc a tiny amount inside the cylinder during directional changes.

Silversurfer; Thanks for the info. Think I'll run the Redline and see how it goes. For the amount of flying I do, it will probably take me years to see any noticable wear etc. I'm running mine 50:1 in my DA50 and that seems to be a good mixture.

Thanks again.

After 200 flights I pulled the heads on my BME and cleaned the piston and the inside of the cylinder.
There was some hard carbon but not much. Most was soft.
I plane to pull it again next summer when I should have another 200-300 flights on my engine.
I expect no hard carbon. I am using Pennzoil at 50:1 but will probably go to 40:1 from now on.

Boy I wish I could get in 200 flights in one year. Something called 'work' always seems to get in the way

Sounds like the penzoil has served you well. Did you use 50:1 the entire time on the BME engine?

Thanks!

The performance differences between the Pennzoil and the Redline are extremely minor. Both are great products.

Well, I bought two 16oz. bottles of Redline so I think I'll use it up and then check the motor and see how it looks. Sounds like it will be fine. I have a new G62 coming from Ralph and I plan on using this oil in it as well.

Thanks for all the info.

So how much better is the $50/gal boutique oil that everyone loves to buy, than the $10/gal Pennzoil? I did some crazy testing with turbine engine oil, because the price was right, and it also worked good. It made a lot of white smoke that smelled awful, and would leave a lot of un- burned oil on the bottom of the plane. If it was part of the RC test it would look impressive because it kept the piston face and exhaust clean, problem was it turned the skirt and ring lands brown and that is the only part that really matters.

All this talk about hard carbon....soft carbon....why not try something simple to help your engines. I read it on a Klotz oil can 20 years ago. Rev up your engine and flood it out on last run. This does 2 very good things. First it keeps the carbon soft and a lot of it will blow right out the exhaust on engine start-up. Second....it keeps all the internal parts protected with lubrication. A third thing can be mentioned...it keeps the seals in good flexible shape. Try it...I have and it works great. Capt.n

If you have a reasonable mix ratio it doesn't matter if you flood the engine or just shut it down at the end of a run. It will be well lubricated either way. Try doing it the other way a time or two and then let the engine sit for a week or three. Then check the cylinder wall. There will still be plenty of oil there.

No big difference either way, so why not go with the noisy way?

The Penzoil 2 stroke air cooled is $1.98 for 8 oz. bottle at advance auto parts. The Redline I bought was $6.75 for 16 oz. bottle. So that's about $2.75 more (for 16 oz.) for synthetic.

I don't really know if it's worth it or not since I haven't run both of them. For the $2.75 difference I thought I would try it. Synthetics are 'supposed' to burn a bit cleaner etc. Guess I'll find out.

The price for the Penzoil air cooled seems strange to me. The Penzoil synthetic 32 oz. is only $2.98. Doesn't seem right.

I suppose it depends a lot on where you do your shopping. The local convience store will bury the price deep in your shorts, where the local mega store will be a lot cheaper and have larger sized containers. Then there's every place in between.

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It's just oil that you are going to blubber out of the exhaust port and which will then be is gone forever. Four-stroke oil would warrant a higher price, since it stays in the crankcase for at least a little while. I'm kidding, of course.

We in this hobby have become so accustomed to being gouged with ultra-hype and high prices that we lose sight of what things are really worth.

I have an engine that wore out the crank pin in about 30 gallons of fuel while using Redline Allsport oil at 50:1. The viscosity of the oil is very very thin, like water. After the engine was rebuilt, I switched to Honda HP2 and then Mobil synthetic, both at 32:1. No engine wear problems since changing oils, and I've burned a lot of fuel. I also noticed with the Redline oil that something always settled out on the bottom of the clear bottle - that can't be good.

The Allsport oil is a bit interesting. This is from redline's website;

A biodegradable lubricant designed for air or watercooled performance engines which require a low-ash oil, not an NMMA TC-W3 lubricant. Better production of power, scuff protection and bearing protection compared to petroleums and other synthetics and it’s incredibly clean. Perfect for reformulated and oxygenated fuels.

The oil I'm using is their 2 stroke racing oil. It seems to be the same consistency of Amsoil etc. And I don't notice anything settline in the bottle. Don't know if that matters or not. I'm new to this stuff and learning as I go. Guess I shouldn't even worry about it. Last year I only burned about 10 gals. of gas because of work and weather. Just about any of the oils talked about will be fine for 2-3 years i imagine.

Thanks for your input.

Yawn yawn..... I thought this thread was dead and buried. For me Bel Ray's MC1 @ 50:1 still rocks.

Karol

FWIW Redline Racing and Redline Allsport are not the same . I read Redline write ups at depth -years ago - and it seemed then that Allsport was more nature friendly - whatever that means -so the basic make up was different. It was also much less expensive
The Allsport is a refreshing drink mix----- like "Jim's Jones Kool Aid"--

HA!!!

I'll stick with Pennsoil 40.1. Taste better on the way down.

Since all commercial oil is pre-dilluted for ease of mixing and injection pumps, I was curious about what is was like before thinning. So I got some Mobil2T, Citgo aircooled, and placed each under 25"hg vacuum and heated to 200F for an hour. I only wanted to boil off the light solvents, both oils were reduced by nearly a third and what was left poured like honey. I did the same test with turbine oil and it did not change at all. Anyway If you are not using an airfilter then "break-in oil" should be the only stuff to use because the rings will lots of wear to seal up all the scratches. Its cheap too!

Try using Pennzoil at 50:1 then go to 40:1.
The engine will be rich and need to be leaned!
I just did this.
Cool!

Geistware....Hey thats good thinking...now if I ever get another new engine! Capt,n

I did a search for the Pennzoil Air Cooled 2 Stroke Oil and found it at the local Schucks for $1..29 for 32 oz. . That's about what I paid for a small 4 oz container of the same oil a few years ago. Gotta go. Heading down to Schucks.
Sam