After-Run Oil usage

[jay3]

Hello,
I was just wondering....

I use Morgan Racing Fuel (20%nitro/12%oil). The bottle says something like, DO NOT USE after-run oils because it contains additives that will protect the engine from rust.
I'm just wondering if that really works or should I should use any WD40 on it if I have it sitting for 1-2weeks. A month?

 

[Cupooterluvr]

IMO always use ARO. Nitro fuel is hygroscopic which means it'll form water in your engine, no mater what is in the fuel, which will rust it. ARO prevents that.

 

[jay3]

I see, I still spray in some WD40 if its sitting for more than about 10days. Should be fine right?

 

[Cupooterluvr]

Yeah you should be good.

 

[SAVAGE_BASHER_K4.6]

wd-4o is fine to put in you engine but i always use aro and i have never had a problem.

 

[abadk9420]

I always say if you are done running for the day put a few drops of ARO down through the carb and glow plug hole then rotate the motor to coat every thing and you shouldn't have a problem...