Which Coolpower Green oil is best for 2-strokes?  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Which Coolpower Green oil is best for 2-strokes?
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Which Coolpower Green oil is best for 2-strokes? - 12/21/2002 9:44:21 PM   
rsieminski



Posts: 1406
Joined: 4/24/2002
From: Sarasota, FL, USA
Status: offline 		CoolPower Green(synthetic)--> light, medium, or heavy. I would think the light weight would provide better transition, but I have no experience with oil weights. I usually use Castor, and lately a gal of Coopers.


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Homebrewer - 12/21/2002 9:57:49 PM   
Homebrewer



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Joined: 12/29/2001
From: Colorado Springs, CO, USA
Status: offline 		Depends on what you use it for and how much % of this synthetic you intend to use in your homebrew mix.

For example:

If I'm mixing a batch of fuel containing 20% oil, of which 20% is castor and 80% is synthetic, I'd use either medium or low viscosity oil.

If I'm mixing a batch of ful containing 17-18% oil, of which 98% is synthetic and the 2% is castor, I'd use the thicker viscosity.

If I'm mixing a straight 100% synthetic containing 20% oil, the medium viscosity would be what I'd choose.

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Which Coolpower Green oil is best for 2-strokes? - 12/21/2002 10:17:46 PM   
rsieminski



Posts: 1406
Joined: 4/24/2002
From: Sarasota, FL, USA
Status: offline 		So, from looking at your post, Castor is thicker viscosity? I usually go with 18-20% 50/50 to 80/20. Med is prob best for all around?

Do you use this brand often? Is it the quality of "Klotz"?


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Quality - 12/22/2002 1:07:34 AM   
Homebrewer



Posts: 1335
Joined: 12/29/2001
From: Colorado Springs, CO, USA
Status: offline 		I don't think you'll have any problem using the coolpower synthetic oil. The quality is very good. I homebrewed 50 gallons of fuel 3 years ago and used Morgan Fuel oil products for the entire batch.

You failed to mention what is it you wish to make the fuel for? What nitro, what engine, what application etc..etc..

I have been known to mix my own blends and mix commercial brands to obtain desired oil content/percentages.

Example:

4 strokes: 20% nitro, 20% oil (98% syn, 2% castor)

2 strokes (.40-.68 size) 15% nitro, 18% oil (75% syn,25% castor)

Norvels: (.061-.25) 25-30% nitro, 20% oil (50% castor/50% syn)
(bushing engines last longer with castor)

RC Car Engine (.16 engine), 20% nitro, 16% oil (50/50 in summer, 75 syn/25 castor in cold wx)

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Which Coolpower Green oil is best for 2-strokes? - 12/22/2002 4:02:06 AM   
rsieminski



Posts: 1406
Joined: 4/24/2002
From: Sarasota, FL, USA
Status: offline 		Everything I run, .15, .25, .32, .40, .46, .48, .61, .68, .91 2-strokes, runs the same fuel ~3-4% nitro, all castor or 50/50 or 80/20, 3% acetone. I raise the compression, and almost all are on a pipe, so I don't really miss the nitro. I'd run no-nitro, but the needle gets real sensitive. Once in a while, for the fast planes, I'll mix in 1/2 as much propylene oxide as nitro along with the nitro. Although, I'm almost sorry I bought the PPO, as I can;t really tell the difference (maybe idle to WOT is a tad faster). I just wanted a lower cost source for synthetic oil, as castor (IMO the best) is a little gooey.


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Which Coolpower Green oil is best for 2-strokes? - 12/22/2002 12:16:51 PM   
Dr Nitro


 

Posts: 162
Joined: 11/12/2002
From: The Great Midwest, USA
Status: offline 		rsieminski

Stick with the Cooper's oil you mentioned you were using. I like their products much better than Klotz or Coolpower.
Their synthetic oil for some reason seems a lot slipperier than the other synthetics and more of it will stick to the airplane than the coolpower synthetic oil. That tells me that the synthetic's that Cooper's is using has a higher flash point than anybody elses and lubricates through the combustion process instead of burining off. I know their fuel costs as much as any other premium fuel on the shelf and thier oil was expensive, but quality costs money.

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Oil - 12/22/2002 6:51:04 PM   
Homebrewer



Posts: 1335
Joined: 12/29/2001
From: Colorado Springs, CO, USA
Status: offline 		If you judge an oil by how much of it sticks to your airplane, then 100% castor should be your choice. Since you plan to use a high percentage of castor in your mix, the choice of synthetic oil to use isn't as critical.

My experience and thousands of flights has led me to believe that the singal most important thing you can do to prolong your engine's life, REGARDLESS OF FUEL USED, is run your engine about 300-400 rpm shy of max lean rpm and never let an ABC engine run below 1/2 throttle for extended periods (a too cool ABC engine temp will wear the ABC pinch)

Since you are using castor (great for bearings rust prevention and an accidental lean run), buy whatever synthetic 2 stroke is easily available to you at an affordable price.

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Which Coolpower Green oil is best for 2-strokes? - 12/23/2002 12:25:09 AM   
Dr Nitro


 

Posts: 162
Joined: 11/12/2002
From: The Great Midwest, USA
Status: offline 		Homebrewer,
No insult was intended, if offended, my appologies. I was meerly pointing out my observations (and my best guess in interpreting the observation) in using Cooper's synthetic oils. I do use it in four strokes and some ringed engines in an all synthetic format. Since Cooper's fuels are hard to find, I get my own components from them and mix my own when I have to.
I do agree with you 100%, best policy for an engine is correctly running them, and castor is the best insurance for lean runs and rust prevention.

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