ORIGINAL: Flyfalcons
ORIGINAL: altavillan
I have the same bottle Bass. Mix it however you need. Following engine manufacturers guidelines would be a place to start. With experience adjust from there.
RTK An airplane engine is alway operating at 100% of throttle setting. That is imo severe duty. With their labeling Amsoil should be mixed at 50 to 1.
If you are running your plane at 100% power all the time then you are either completely underpowered or are flying a racer. Having said that, I just got back from the motorcycle shop, where I was looking to buy some ashless for break-in on my new engine. While I didn't find any there, I did take notes on the available synthetic oils and their recommended mix ratios. These were all designed for 2-cycle use.
Honda HP2 100% synthetic 32:1 only
Motorex 2T "up to 50:1"
Spectra SX 100% synthetic 32:1 only
Bel-Ray H1R 30:1 - 50:1
Red Line Synthetic 16:1 - 100:1
As can be seen, not all synthetic oils are designed for use at 100:1 mix. This is why it's important to a) not make generalizations with regards to mix ratio and b) read the instructions on the bottle of the oil that you are using.
may I add to this the ELF racing oil range? Quite excellent oils, but recommended at ranges from :
htx 909; 3-7%
htx 976; 3-4%
Both these oils meet my personal requirements, but are mixed at much higher ratios than many would dream of. They make it to that chequered flag for sure!
Personally, and because of availability, I run Putoline 959(2 - 4%), and may switch to putoline MX7 (1 - 3%) OR mhx CART2 (1 - 4%) of the later generation.