glidernut

The motor is only running about 6,000 rpm I have had trouble with castrol TTS as the motor is not running hard enough to burn off all the carbon. The oil to be used is Castrol 2t

The motor is only running about 6,000 rpm I have had trouble with castrol TTS as the motor is not running hard enough to burn off all the carbon. The oil to be used is Castrol 2t

The operating manual for the Grob calls for an engine speed of 6,200 - 6,400 rpm would this still be a problem? I will look for a supply of Castrol 2t. I am in Richmond Virginia and I cannot obtain Castrol 2 stroke oil locally so I will have to order on line anyway.

 

 

Thanks for the advice. I did read a test report from Pennzoil that indicated the "Pennzoil, 2 cycle, Air cooled oil with a category TC" is recommended for aircraft use.

 

Eric

 

 

Thanks for the input Geoff.

 

I did find a reference from Pennzoil that explained why air cooled engines need a different oil than water cooled engines. However as you said oils have improved over the last 15 years. I look forward to additional input.

 

Thanks

 

Eric

 

 

I have just purchased a Grob 103 c SL Motor Glider with a Rotax 505 engine and would like advice on the best 2 stroke oil to use. My 15 year old book indicates Castrol tts. Is this still the best oil?

 

 

I have just purchased a motor glider with a rotax 505 engine. I am looking for advce on the best 2 stroke oil to use. The 15 year old book recommends Castrol tts. Is this still the best oil to use?