Cammie Patch
Active Member
I have an RV12 SLSA with 300+ hours on it. It has run Aeroshell Sport 4 since birth. I bought it at about 165 hours, and it has had quite a bit of vibration at low RPMs. At startup, I have to idle close to 2500 RPM to keep the vibration under control. I've rebuilt the carbs, and balanced them a few times. I've noticed quite a bit of ferrous metal on the magnetic plug and in the filter. I believe that the dog gears have excessive wear, which is very annoying since it has been run according to specs.
I also have an AutoGyro Calidus with a 914 motor. It has over 800 hours. Magnetic plug and filter are always very clean. It idles very smooth. It has used Mobile 1 4T since birth.
I'm wondering if the oil has something to do with the wear. I am curious what oil others have been using, and if they have seen metal in the filter/magnetic plug. I suspect that Mobile 1 has better gearbox additives.
Both engines are almost completely run on 91 octane non-ethanol fuel, although the RV12's fuel before I bought it did have ethanol.
What has been your experience?
Cammie Patch
Glass Cockpit Aviation
A&P/IA/LSRM/CFI
I also have an AutoGyro Calidus with a 914 motor. It has over 800 hours. Magnetic plug and filter are always very clean. It idles very smooth. It has used Mobile 1 4T since birth.
I'm wondering if the oil has something to do with the wear. I am curious what oil others have been using, and if they have seen metal in the filter/magnetic plug. I suspect that Mobile 1 has better gearbox additives.
Both engines are almost completely run on 91 octane non-ethanol fuel, although the RV12's fuel before I bought it did have ethanol.
What has been your experience?
Cammie Patch
Glass Cockpit Aviation
A&P/IA/LSRM/CFI