Gee this is a good one!
I've been running motors in both large diesel trucks and gasoline motors for almost 50 years guess what, clean
oil and routine maintenance saves you money. You know what they say, "pay me now, or pay me later", good advice.
One thing to understand, manufactures write their manuals to reflect "more maintenance bucks for them", and the government makes them attempt to be environmentally correct so we save our resources. This is all BS,
Just change your
oil based on how you use the vehicle..keep it clean and in tune and you will most likely get great service out of the machine.
Best Regards, Bill