Boy this forum moves fast. On my question about cylinder pitting a day or so ago, a guy by the handle of "guido" said that I should check my coolant's voltage. Said that 0.3v was the max you should read.
Ok. So now we are talking about electrolysis as the/a culprit for this and I can easily understand that. If you have had anything to do with the marine environment and notice those unpainted gray looking things attached to outboard motors they are Zinc sacrificial elements which are supposed to dissolve to satisfy the electrolysis of the system rather than important parts of your engine.
So, electrolysis can easily be the mechanism that attacks your cylinders and the comments I received on Ion Filters on OTR truck engines that easily run 1 million miles in their lives supports this as a prime culprit.
So I just measured every engine on the place with water cooling (opps I just remembered I missed my hay truck). The tractors date from '63 to '07 with varying pedigree's with respect to overhaul, coolant changes, antifreeze mix, after market additives and all that stuff. None have ion filters. Will just show you the range of readings, not the unit specifically except for the '07 tractor, and the two pickups, one an '05 at 15,000 easy miles and an '07 with 5,000 easy miles.
Measurement was made at a temp of 70F, humidity around 80%, 800 ft altitude, and pressure of 30+ and rising. Meter (high impedance input, digital display) was on dc 2v scale. All coolants were at room temp, and except for the pickups all connections were from the metal radiator flange (where the cap installs) to the fluid just inside. Engines were all off. All had 50/50 or no less than 25/75 and anti freeze was regular EG except for pickups which had the pink high mileage stuff with factory fill. Pickups had to be measured to the alternator case on the engine as the radiator cap was plastic.
Numbers were 0.158 dcV, 0.082 (new tractor), 0.240, 0.227, 0.177, 0.187 ('07 P/U), and 0.255 ('05 P/U).
Looks like I am good to go on all units. The 2 year old P/U looks like will be ready for new freeze soon. I may just dump a $3 botle of JD conditioner in it, run it awhile and retest, just to see what happens.
Well this has certainly helped me get a handle on things and hope it helps some of you too.
Mark
Ok. So now we are talking about electrolysis as the/a culprit for this and I can easily understand that. If you have had anything to do with the marine environment and notice those unpainted gray looking things attached to outboard motors they are Zinc sacrificial elements which are supposed to dissolve to satisfy the electrolysis of the system rather than important parts of your engine.
So, electrolysis can easily be the mechanism that attacks your cylinders and the comments I received on Ion Filters on OTR truck engines that easily run 1 million miles in their lives supports this as a prime culprit.
So I just measured every engine on the place with water cooling (opps I just remembered I missed my hay truck). The tractors date from '63 to '07 with varying pedigree's with respect to overhaul, coolant changes, antifreeze mix, after market additives and all that stuff. None have ion filters. Will just show you the range of readings, not the unit specifically except for the '07 tractor, and the two pickups, one an '05 at 15,000 easy miles and an '07 with 5,000 easy miles.
Measurement was made at a temp of 70F, humidity around 80%, 800 ft altitude, and pressure of 30+ and rising. Meter (high impedance input, digital display) was on dc 2v scale. All coolants were at room temp, and except for the pickups all connections were from the metal radiator flange (where the cap installs) to the fluid just inside. Engines were all off. All had 50/50 or no less than 25/75 and anti freeze was regular EG except for pickups which had the pink high mileage stuff with factory fill. Pickups had to be measured to the alternator case on the engine as the radiator cap was plastic.
Numbers were 0.158 dcV, 0.082 (new tractor), 0.240, 0.227, 0.177, 0.187 ('07 P/U), and 0.255 ('05 P/U).
Looks like I am good to go on all units. The 2 year old P/U looks like will be ready for new freeze soon. I may just dump a $3 botle of JD conditioner in it, run it awhile and retest, just to see what happens.
Well this has certainly helped me get a handle on things and hope it helps some of you too.
Mark
