Re: Does my '56 Clipper needs an oil filter?

Posted by Owen_Dyneto On 2013/4/24 13:30:02

An interesting practice is to analyze by atomic absorption spectroscopy the metal levels in the fresh unused oil you are using, the oil in the crankcase at change time, and the levels of these same metals in the sludge at the base of the bypass filter housing. Analyses are about $25 a sample and this type of monitoring was/is? pretty routine for piston aircraft engines to monitor wear and of which engine components.