knock

Have you checked the oil level? ronm

Are you using non-Nissan filters with lousy drain back valves in them? Or perhaps you just happened to get a filter with a poor valve in it.

I discovered that Toyota V-8 engines (early Lexus with 100K miles on it at the time) don't like to be started and run only for an instance and not have a chance for the oil to fully pressurize the engine before being turned off. Perhaps some of the same with the Nissan V-6.

r> Boots Crofoot wrote:

Yeah, don't overANALyze it! The knock hasn't come back, has it?

My 95 sometimes rattles a lot upon initial start, and then the oil starts to lubricate everything and the noise stops. I don't know, that has happened since I bought it and is one of those things I notice in exceptionally cold or very hot weather.

Presumably, the oil on a cold day can't get through the engine fast enough to lubricate everything and on a hot day, the oil has all gone to the sump and nothing is left to lubricate until the engine is running.

rtt