I should have added that TBO is just based on hours. Not all that relevant compared to the environment, utilisation, type of operation and type of maintenance, - oils used etc..
There is now a calendar catch on TBO also but that really just tries to address the low utilisation aspect of some engines.
Modern oils such as Philips XC20/50 and Philips anti-rust oil are just so much better in my opinion. I have heard so many good news stories and it makes it difficult to compare hours to hours, apples to oranges etc..
The NZ leaflet on running engines On-Condition stresses the need for the engines to run hot also. I have seen many engines in this country that had previously been running far too cold. I could not believe my eyes when I saw the ball in the OPRV of one engine red rusty and pitted. What chance did that poor engine have ?
Last edited by baron_beeza; 19th Sep 2011 at 00:28.