Originally Posted by
RC-ZOMBIE
I agree, if you race alot you don't need it. I use it the most when I store my engines for the winter
See that is different. Storing for the winter or a long period of time I will use some ARO, but again I personally prefer the thinner variety.
As for air filters, you are correct that the thicker oils will attract more dust around the outside, but they will also better keep the fine dirt particles out. Solution to them loading up with dirt is to change your filter often. I use pre-oiled losi filters and change them often. Even the oil losi uses is a bit thin for an air filter oil IMO. And with that said, I would never put even that in my engine. Too thick.