28-04-2020, 06:50 AM
No idea Bob - I have simply used the cheapest 20/50 oil I could find and put it in, then replaced it again after about 2000 miles.
I have had several engines come in over the years where bore wear was exceptional but with no obvious smoke or oil loss, just clatters.
Quite a lot of smokers come in with almost no wear but rings that are not bedded in correctly.
This particular engine was run in on 6 week tour that covered around 5000 miles - continual driving and load most likely help set it up for long service.
The pistons I use require at least 3000 miles of careful bed-in before they work efficiently - this was certainly the case with the cars replacement engine on our 2018 tour. Oil use reduced to almost nothing after this figure with gradual improvements each day to that point.
I have had several engines come in over the years where bore wear was exceptional but with no obvious smoke or oil loss, just clatters.
Quite a lot of smokers come in with almost no wear but rings that are not bedded in correctly.
This particular engine was run in on 6 week tour that covered around 5000 miles - continual driving and load most likely help set it up for long service.
The pistons I use require at least 3000 miles of careful bed-in before they work efficiently - this was certainly the case with the cars replacement engine on our 2018 tour. Oil use reduced to almost nothing after this figure with gradual improvements each day to that point.