auto2

I have a used mugen buggy,
the only fuel I found local was blue thunder race formula %30

this is not the same fuel that the car was raced with.

is it true that if I change fuel brands( different oil content i think) I have to brake in the engne all over again?

also I can't remember what brand he told me they use.
mcgregor? mcgreddy? ???

both are %30

NitroFreak

You don't have to break it in but you will have to retune your engine. going to a high nitro % you will have to richen the mixture up a bit

Billyman

My Feedback: (1)

Once an engine is “broke in” it is just that.

Brands don’t matter really, just check with the manufacturer for specifics on recommended oil and nitro percentages. The percentage recommendations and staying within them are the most important. Brands shmands, blah.

auto2

the fuel he used was also %30 so that is not changing.

I can understand having to retune though.