Originally Posted by
Dr Honda
Dirk,
I'm sorry..... that's not the way I meant it. I'm on your side. I agree... 2-stroke has no biz being in a turbine engine. As far as why Shell 500 doesn't work... I don't know... but I stopped burning it a while ago to get away from the toxic issues.
I was simply saying that some one like Jim (who lives in a small country) may have a hard time getting anything that is approved.
I wasn't trying to make it sound like I was putting words in your mount, and I will make a full retraction if needed. I was just trying to be helpful. (that's why I posted my 2-stroke pics)
Once again... I'm sorry for the way I presented my points.
Do you think that the commercial turbine oils ie mobil, aeroshell etc should be put in a situation where they are allowed to burn? NONE are designed to be burned. Look at the actual tests required to meet mil-prf-23699 and none of them get anywhere near the temps that the oil is exposed too in operation in a model turbine let alone being burned. It is a crapshoot that they provide any lubrication at all to the rear bearing-especially since we are mixing them with kerosene, etc....the new kingtech oil appears to be based on shell hydraulic fluid with some other additives. Should it be used in an application where it can burn? I suspect that the good results bearing-wise are attributable to the very high flash point required of most hydraulic fluids (about double that of the best milspec turbine oil) so it probably has a much higher chance of surviving to the rear bearing. I also wonder what specification oil kingtech will provide to replace the current mil-prf-23699 spec in the owners manual since aeroshell 500 meets it but now it is "prohibited" for warranty repairs.