R_p_ryan
Senior Member
- Joined
- Dec 11, 2014
- Messages
- 171
- Location
- USA
- Vessel Name
- Shellbourne
- Vessel Make
- 1978 Mainship 34 Perkins T6.354
I'm about to reassemble my freshwater cooling system and am utterly confused as to which coolant to use. This is a 1977 Perkins T6.354. Recent articles on diesel coolant state a special "OAT" formulation is required to prevent pitting, especially with wet sleeved engines.
I believe this motor is dry sleeved, but I'm stuck in analysis/paralysis. After one article I should definitely use OAT, then another it's NOAT, then another it's HOAT, then another says it doesn't matter because they're actually dry sleeves. Then something else comes along and says I should use straight water with Redline WaterWetter or Purple Ice.
There was brown sludge lining some of the internal plumbing and I've read that's caused by the corrosion-protecting silicant precipitating out of traditional coolant.
I think I'm going to use 50% coolant and distilled water. For the coolant it's either Peak Final Charge NOAT ($28/gal undiluted) or Xerex G05 HOAT ($21/gal undiluted).
~ confused.
I believe this motor is dry sleeved, but I'm stuck in analysis/paralysis. After one article I should definitely use OAT, then another it's NOAT, then another it's HOAT, then another says it doesn't matter because they're actually dry sleeves. Then something else comes along and says I should use straight water with Redline WaterWetter or Purple Ice.
There was brown sludge lining some of the internal plumbing and I've read that's caused by the corrosion-protecting silicant precipitating out of traditional coolant.
I think I'm going to use 50% coolant and distilled water. For the coolant it's either Peak Final Charge NOAT ($28/gal undiluted) or Xerex G05 HOAT ($21/gal undiluted).
~ confused.