to use in a Tanaka 40 engine? I need to get some more and I forgot the name.
Hi Bob,Mary, I messed around the WWW searching for data etc, and ended up going with easiest brand to find.
I use the Tanaka stuff as I can buy it locally, but any reputable brand made for application should do well at manufacturer's stated mix-ratio.
A neighbor messes with two-cycles engines as a hobby and he says I have right idea- can't go wrong with mfgr's recommended stuff.
I am anal, but this is one thing I have decided to keep simple and follow maker's advice; it is simple.
Please cite your source of information. THis shouldn't be an issue with today's additive technology. Vitamin E is added in small amounts to stabilize castor oil making your point moot. I've got 90 day old castor oil based fuel in my motorbike and in one of my cars. No problem to date. Yes, I said car, I supplement the oil injection in one of my rotary vehicles with a hint of castor. Been doing it for years and on 5 prior rotaries without any issues.The only problem with castor oil is that it is quite unstable - it starts oxidizing the minute you mix it, and goes stale in a few weeks. Which plays hob with the lubrication...
Maybe the synthetic blends would help counteract this, but, unless you're racing and throw away any unused fuel after each weekend, it would be an expensive oil to use, I would think.