Since my previous cooling system post has gone south, I thought I'd redeem myself and post another question.
It's time for fluid maintenance on my John Deere 1025 subCUT tractor with a Yanmar diesel NA engine. Of course the owners manual recommends John Deere products including Cool-Gard II coolant. But the local JD dealer wants $28.22 for a 4L jug of their pre-mix, and a local distributor has Prestone Command HD premix on sale for $8.99 a 4L jug.
Is the John Deere coolant 3 times better?
The owners manual says if JD products are not available then use a "coolant intended for use with heavy duty diesel engines," and they want nitrite free, "providing cylinder liner cavitation protection according to JD Cavitation Test Method or a fleet run study run at or above 60% load capacity, protects cooling system metal (cast iron, aluminum alloys, and copper alloys such as brass) from corrosion."
I have no idea what the last bunch of stuff means.
If they want cavitation protection then the Yanmar engine must have wet cylinder liners, but I can't actually find that information anywhere. I've only found vague references to European standards wanting no nitrites but again I have no idea what this really means.
Any coolant experts out there that can clarify all this? Thanks!
It's time for fluid maintenance on my John Deere 1025 subCUT tractor with a Yanmar diesel NA engine. Of course the owners manual recommends John Deere products including Cool-Gard II coolant. But the local JD dealer wants $28.22 for a 4L jug of their pre-mix, and a local distributor has Prestone Command HD premix on sale for $8.99 a 4L jug.
Is the John Deere coolant 3 times better?
The owners manual says if JD products are not available then use a "coolant intended for use with heavy duty diesel engines," and they want nitrite free, "providing cylinder liner cavitation protection according to JD Cavitation Test Method or a fleet run study run at or above 60% load capacity, protects cooling system metal (cast iron, aluminum alloys, and copper alloys such as brass) from corrosion."
I have no idea what the last bunch of stuff means.
If they want cavitation protection then the Yanmar engine must have wet cylinder liners, but I can't actually find that information anywhere. I've only found vague references to European standards wanting no nitrites but again I have no idea what this really means.
Any coolant experts out there that can clarify all this? Thanks!