Think it's year 1999
Yes, one time the thermostats had stuck open and it was running cold, the amount of stuff in oil spinner next time was something else
When does it not lubricate so well though? Should it be changed every month? Seems a bit overkill
As long as the oil is to the manufacturers specifications it should continue to lubricate for the length of the service interval, oil can break down over time as well though hence they usually specify x number of miles/hours or every year etc. As @ACEngineering says it doesn’t do any hurt to change it a little bit sooner if it on a long life interval.
Around 1000 km a week so it soon adds up
The engine is running and pulling well, the time the thermostat stuck open the oil went like tar and wouldn't even drip off the dipstick but its OK now again apart from the burnt smell!
To be honest when ever I’ve done anything on a wagon engine (I do tend to do that much with them these days) the oil has always had a burn smell to it! I don’t know but it could be something to do with the low rpm they tend to run at?
Could well be, they don't really rev over 1600
I notice the old JD6310 and the ancient DB995 working in the sawmill keep clean oil for some weeks after a change, whereas the newer JDs on the farm go black the minute you fire em up. Presume it's summat to do with them breathing their own farts to control emissions.
