Bekra so far

[squeaky pete]

just took the back plate off my os55 for a quick look, looks new in there, and thats about 5 gallons of rapi now

[MartinH]

When done,whip backplate off and check for rust,my mate put 1 gallon through a YS91 after using Bekra for 2 years then his bearing went a week after the last tank

Its a new Engine, bought at 3D champs from FL tent.
Ive just checked the engine out of curiosity anyway as I haven't ran it for a week or two before christmas and theres no rust on crank or anywhere where I can see through the backplate. Theres a little bit built up near the top of the piston (near the piston ring) but its in good condition thankfully, but I am going to switch to rapycon. Never thought Id say that because I was fairly happy with optifuel, and it smells nice lol.