I've run a gallon of Cool Power MV Total Synthetic through my NexStar since I bought it. I went to buy more fuel last weekend because I was almost out. I grabbed a gallon of the green Cool Power Total Synthetic and out the door I went after paying. This weekend I got ready to put the new gallon on my flight box and low and behold, it's a different kind I guess. It's Cool Power not Cool Power MV. There's a bar code label of both jugs...On the old one it says Cool Power MV 15%. The new one says Cool Power 4-Cycle 15% Castor/Synthetic Blend. However it says Total Synthetic on the main bottle label. What the heck do I have and is it okay to use it in my plane? The LHS is a little over an hour from here and I won't have a chance to go again until possibly next weekend.

It'll work fine. Many of us regularly change brands of fuel.

4 strokes tend to like a little castor I believe. It certainly won't hurt your engine. You'll probably see a little more slime on the plane but that's about it.

They tell u not to use 4 stroke fuel in a 2 stroke because it has less oil like 16% versus 18%. Maybe u can find someone at ur flyin site that will swap that has a 4 stroke..

Dont own a 4 stroke, but other than a bit more lube, I cant imagine there is any thing else different about the fuel, certainly it wont harm your engine to run it...castor is all we use in 1/2A engines because of its lubricating abilities, but it will leave a bit more brown residue on your plane than synthetic will....Rog

Good deal. I looked on the Morgan Fuels website and looks like the difference is that MV is 15% nitro, 18% lube, multi viscosity. What I have I believe is 15% nitro, 17% lube, ultra-high viscosity...doesn't seem much different. What confuses me is that the new bottle says total synthetic on the big green bottle label but the barcode says castor/synthetic blend. I don't care either way as long as I can fly with it and it won't hurt anything. Thanks for the help fellas!

http://www.morganfuel.com/cp_blends.htm

The only difference between the two fuels is that one is all synthetic lube, and the other is 50% synthetic, 50% castor. The total oil content of both fuels is the same. I regularly buy a gallon of each and mix them together, or alternate between them. I don't have any 2-strokes, all my glow engines are Saito's.

Cool Power 15% is not a full synthetic, it is the only Cool Power that has a very slight amount of castor in it. the bar code you're reading is NOT applied by Morgan, their bar code does not have any mention of the blend, that is applied elsewhere. they do however have on the big label where it's printed Cool Power total synthetic blend but the 15% still has a slight castor addition. also the Omega (pink) is a 30/70 castor/synthetic mix, not a 50/50.

kc