Long 610 - 1st oil change?

[NatWester]

Long 610 4 cylinder 102mm - fresh rebuild: pistons, rings, honed, rod bearings, gasket kit. Break-in: how soon should i change the oil?

 

[used red MN]

In my opinion if you have or will subject the tractor to run times of at least an hour once started and the engine was pulled at anywhere from 1/2 load to full load during the majority of run time a 50 hour dump of the break-in oil is my recommendation. However, if the vendor of the overhaul parts, namely the piston rings ,has some other recommended break-in period I would follow that.

 

[JIM MN]

If you used a break-in oil, work that engine under load for a plus 100 hours. Avoid idling the engine. Keep coolant temperature up. Do a brief cool down after each work session!