Im getting an O.S. Cv-rx .18 and I was wondering whether the fuel that I use, Byrons 20% nitro with 16% lubricant, has enough lubricant. According to Towerhobbies.com the recommended fuel lubrication is 18%. Should I switch fuel? Or will the byrons be fine.

not too long ago engines would require a more lubricated fuel for break-in, but from what i have read lately about engine manufacturing and new lubricants in todays fuel evryone is saying the best thing to use when breaking in a new engine is the same fuel you plan to run in the car. I did just that when i broke in my new TRX 3.3. although the fuel i use is trinity monster brew that DOES have 18% lubricant. all in all you should be alright with byrons. as long as it is a new gallon and not something that has been sitting for awhile. hope this helps. if you have anymore questions, feel free to ask.

alright thanks, but the lower lubricant wont damage the engine will it?

anything above 8% oil content is a waste, i run byron fuel in mine, its good for keeping the temps down and is a great fuel, run it in with btron and keep using that fuel, its great!!!...

I broke in my 2.5r on 12% Sidewinder fuel and my buddy broke in his OS Cv-rx 18 on Backyard Basher which has 16% lubricant it worked perfect. I would reccomend these fuels to anyone. The Sidewnder is a race blend and is very very good.

Jason

You need to do some reading as if you read farther on Towers Web site you will see that all the fuels they has have the equivalent protection to 18%. With the better oils they have this day and age you do not need as much oil. Anything over 12% oil content can do more harem then good!!!!!!!!!

This is off Towers web site!

Specially formulated fuel blend for competition radio controlled,
glow powered cars and trucks.
O'Donnel Racing fuel contains an advanced lubricant package which
provides engine protection equivalent to that of conventional
lubricants that have an 18% lubricant content. This optimizes
performance and maximizes engine life.

Why 8% to 12% Oil

Using high oil content fuels (above 12%) in gas car engines won't provide improved engine life, as some would expect. Through extensive testing we've discovered the point of diminishing return as far as oil content to engine life is actually around 8% for most car engines. In other words any more oil than 8% in the fuel does noting to improve the life of a car engine. In fact the secondary effects of high oil content fuels can actually cause engine damage by encouraging over lean runs. Here's how.

Using high oil content fuel causes a car engine to be unresponsive during acceleration acting as if the engine were running rich. Typically when using high oil content fuel, in order to get crisp acceleration and response, an engine will need to be adjusted overly lean. In addition the high oil content prevents lean bog when an engine is over-leaned thus allowing the engine to run at this lean setting without the customary telltale lean bog warning letting you know the engine is overheating.

In summary, high oil content fuels don't give added protection. The point of diminishing return from a protection standpoint in a gas car application is about 8% oil depending on the oil type and engine. Anymore oil than this doesn't offer added protection and has potential secondary effects that reduce performance and can actually cause you to over lean your engine in an attempt to get crisp throttle response and acceleration.