ORIGINAL: outssider
ORIGINAL: yarom
I guess the Chinese instructions are not that clear then... I have 3 DA-50s and all of them are running extremely well on 80:1 Amsoil which is the recommended mixture.
The guys at Marymoor are typically running their DL-50s at 75:1 to 80:1 Amsoil Saber, which is higher than the recommended mix for this oil (100:1). If Amsoil is not high quality oil, then what is? The 50:1 Amsoil is the Dominator brand.
I guess what you are saying is that the DL needs a different mixture than the DA?
ORIGINAL: jedijody
I have repaired two DL 50's of the Marymoor club members and sold the parts to another so he could do the repairs himself. All three gentlemen were using the same anemic fuel/oil mixture. If you put some quality oil in your gas and mix it to the engine manufacturers recommendations, which is not 80-100:1, your engine will last you a long, long time. I have a first generation DL 50 with about 40 gallons through it in 2-1/2 years of hard flying. It's just like the energizer bunny and strong as a mule.
Jody
ok... If we are talking about the mains, this is just stupid talk.....the main bearings are permanently sealed with grease. So you could run Zero oil and the mains shouldn't have a problem...
All of the bearing failures that I have seen have been connecting rod bearings, both ends. Although I do not use Amsoil, I will not say it is not quality oil, I'm not looking for a fight. All I wanted to say is that the manufacturers know thier engines and design them to be used within a given set of parameters that are clearly disclosed in the instruction manuals. If you think that the Chinese manuals are unclear then you have not read them. Even with some of the poor translation in the manuals, thier recommended oil mixtures are very clear. If you are unclear about anything in the manual that could possibly mean the difference between life and death for an engine, please ask the selling dealer for clarification of what the manual says. These people are extending a warranty to the end user and at least for the length of time that warranty is in effect we should follow thier recommendations.
Jody