MackChuck Posted April 9, 2021 Share Posted April 9, 2021 (edited) Low oil pressure light came on while driving and shut down the engine. No leaks, oil dipstick showed full. After I waited a bit I got the engine to start. Then I noticed the coolant was low, which it wasn't when I originally pulled over. Added 3.5 gallons of coolant and it kept going down, even while the engine was off. I did notice a little splattering from the rear oil filter after I re-started the engine, but not continuously. I also have a fuel injector that needs to be replaced. Edited April 9, 2021 by MackChuck More info Quote Link to comment https://www.bigmacktrucks.com/topic/66511-radiator-fluid-disappearing/ Share on other sites More sharing options...
fjh Posted April 9, 2021 Share Posted April 9, 2021 (edited) assuming its a Mack ! not enough info what year and model of truck! engine model mp7/ 8 or gray E7 engine! Edited April 9, 2021 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/66511-radiator-fluid-disappearing/#findComment-472299 Share on other sites More sharing options...
MackChuck Posted April 9, 2021 Author Share Posted April 9, 2021 2014 mp8 engine. Quote Link to comment https://www.bigmacktrucks.com/topic/66511-radiator-fluid-disappearing/#findComment-472305 Share on other sites More sharing options...
fjh Posted April 10, 2021 Share Posted April 10, 2021 After you have checked your simple stuff the rad cap ect ! Most common issues on this subject are EGR Cooler Failing Second in line are the injector cups can cause this however usually also give other issues hard starting slow to start indicaters! Water pumps fail once in a blu moon similar but not the same symtoms with over heat . our first check would be the EGR cooler Quote Link to comment https://www.bigmacktrucks.com/topic/66511-radiator-fluid-disappearing/#findComment-472334 Share on other sites More sharing options...
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