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