Calling all 603 owners,and gurus
.
So like the title says,does anybody knows what is the "normal" coolant pressure for OM603 (mine is 603.971)?I search the web and Mercedes manual but I can not find the information
.
I have no problems,no overheating,no coolant loss,nothing except that to me hoses feel little hard,not rock hard but still harder than I think they should be.I can squeeze them maybe 1/3-1/4.
And after night I still have a small amount of pressure in the system,the hoses are soft,but when I open the cap I hear a whoosh sound
.
So any info would be appreciated.
Oh and i forgot to mention,that my brother did a full head job(he had coolant in cylinders),before I bought the car from him,maybe 30000 miles ago.
And I also noticed that the lower hose is cool,I changed the T-stat when i bought the car out of precaucion.And last week I tested it and it opens normal,but i drilled a 6mm hole just in case.Once again the temp is normal 80-90 C,no coolant loss,no coolant smell,no white smoke from the exhaust,nothing unusual except the pressure .
Thanks in advance.