Originally Posted by
acdii
Got my FG-11 today, fits the T-Clips perfectly. Reading the booklet it shows 20:1 oil ratio, is that right? Seems pretty heavy on the oil side, my DLE is 30:1.
Your DLE has needle bearing on the rod journal & probably the wrist pin too.
The Saitos have the same bearings as the FA methanol engines or perhaps a bronze bushing at best.
Even at 20:1 some rid bearing failures have occurred. Some are going to 15:1, especially on the big radials.
Why would the same engine require 5% lube with gas when it requires 20% with methanol being delivered at nearly twice the fuel volume? That's 8 x the oil volume.