haus4350 Posted November 17, 2009 Share Posted November 17, 2009 (edited) i put two cans of dyke brand stop leak and two gallons of antifreeze in it...so far it has not leaked any more coolant into the crankcase...any ideas on where the coolant could be leaking from if the stop leak solved the problem?also...the oil is onot turning gooey and milky in the blowby filter now since the coolant is not getting into the oil...will the coolant and water steam out of the oil or will it be in there until i change the oilshould have put the stop leak in there sooner...thanks. Edited November 17, 2009 by king cotton Quote Link to comment https://www.bigmacktrucks.com/topic/11434-e7_427-motor/ Share on other sites More sharing options...
Mackpro Posted November 17, 2009 Share Posted November 17, 2009 i put two cans of dyke brand stop leak and two gallons of antifreeze in it...so far it has not leaked any more coolant into the crankcase...any ideas on where the coolant could be leaking from if the stop leak solved the problem?also...the oil is onot turning gooey and milky in the blowby filter now since the coolant is not getting into the oil...will the coolant and water steam out of the oil or will it be in there until i change the oilshould have put the stop leak in there sooner...thanks.Does your engine have a coolant filter on it? The reason I ask is around 2001 mack started making the coolant filter optional( I think about 50-75$) and alot/most all of fleet trucks were built with out them. Fast forward to today and most fleets and 2nd owners didnt keep the PH/DCA "whatever you call it" levels correct and it would eat the block up where the liners rest on the ledge in the block and block pitts up on the ledge and leaks coolant past the liners into the oil pan. Now when this happens we usually remove the liners and cut out the pitting and put shims in to raise the liner back up to specs. And of course use new liners and rings and rod and main bearings. This is what we call a mini-overhaul, reuse the steel pistions and heads. Quote Link to comment https://www.bigmacktrucks.com/topic/11434-e7_427-motor/#findComment-43382 Share on other sites More sharing options...
haus4350 Posted November 17, 2009 Author Share Posted November 17, 2009 yes it does have a coolant filter....truck has 20k hours on it....i have no engine history...was gonna tear into it this winter...i only haul grain with it and use it 3 months a year... Quote Link to comment https://www.bigmacktrucks.com/topic/11434-e7_427-motor/#findComment-43398 Share on other sites More sharing options...
fjh Posted November 17, 2009 Share Posted November 17, 2009 If it were mine and I used it as much as you do I would be doing the same thing As 68 has stated liners are the likly culpret! run it for a bit more and drain off the goo you have put in the rad flush it and restore it to proper coolant and get on with life!Ive been tempted to try this stuff http://www.rxauto.com/index.htm if it leaks agian phone these guys and give it a try.they garrenty it or your money back. Quote Link to comment https://www.bigmacktrucks.com/topic/11434-e7_427-motor/#findComment-43400 Share on other sites More sharing options...
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