Posted by Steve@Advance on February 20, 2021 at 11:22:28 from (66.169.147.211):
In Reply to: Engine oil posted by 1850joe on February 20, 2021 at 07:35:11:
Nothing wrong with using modern oil in old equipment.
The 15w40 diesel oil is the best all around oil for the old flat tappet engines. Be it synthetic or conventional.
Modern gas engine oils are designed for roller cams, which don't need the zinc type additives anti wear additives. They are also designed to be compatible with high tech emissions systems, not a concern with older vehicles.
Synthetic has it's advantages, as in resistance to extreme temperatures, especially in air cooled and 2 cycle engines. But it is also more expensive. For general use, low use vehicles and equipment that gets an annual oil change regardless of little run time, it is a waste of money.
The only concern would be switching to detergent oil with a severely sludged engine. But anything that sludged is on borrowed time anyway if it is still a working tractor, eventually it will need to come apart.
If it is a survivor antique,and you want to preserve it for show purposes, just keep using non detergent. It will probably outlast all of us anyway.
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