Walkyrie_Engineering Posted November 29, 2022 Share Posted November 29, 2022 May be a dumb question, but where is the oil cooler located on a 2013 MP8? my oil temp doesn't seem to correlate to my engine temp like I'm told it should, I know there not an exact correlation but I've been told usually around 10 degrees but my oil temp seems to climb (particularly if I'm climbing a long grade) I try not to let it get too high (but it has almost reached 230 before i caught it) I can manually turn the fan on and keep it on till the temp returns to normal, but the oil temp climbing to 225 while the coolant temp is around 200 seems a bit of a gap, good conditions my oil temp is usually around 208. I've looked around for your typical oil cooler radiator looking thingy but there is none to be found, doesn't appear to be a transmission cooler either (trans temp has always been good I've had no problems there) but it still leaves the question, Where does the oil get cooled? there are stick like radiators for the power steering but nothing for the oil? Am I missing something or am I just being paranoid? Both are highly probable. 2013 Mack CHU 613 MP8 505 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted November 29, 2022 Share Posted November 29, 2022 It’s in the block behind the egr cooler Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted November 29, 2022 Share Posted November 29, 2022 These trucks run hot, don’t be surprised to see 250 in the summer. Your coolant temp is normal too. Usually about 190-210 1 Quote Link to comment Share on other sites More sharing options...
Walkyrie_Engineering Posted November 29, 2022 Author Share Posted November 29, 2022 naturally, it seems i am doomed to repetitively tearing that side of my engine apart. is there a way to add an external oil cooler for efficiency sake? 1 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted November 29, 2022 Share Posted November 29, 2022 2 hours ago, Walkyrie_Engineering said: naturally, it seems i am doomed to repetitively tearing that side of my engine apart. is there a way to add an external oil cooler for efficiency sake? that side is where all the magic happens 1 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 30, 2022 Share Posted November 30, 2022 On your oil filter stand there are 2 different oil control solenoids that control oil to the piston cooling nozzles and the oil temperature. The engine ECM controls these solinoids. No exact data on actual temps they are trying to achieve though. But 250 degrees in the summer is common. You always want your oil temp at least over 212 to boil off water /condensation. 2 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted November 30, 2022 Share Posted November 30, 2022 Those solenoids are know to be issues too. Not saying you have an issue from what I see though. Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted November 30, 2022 Share Posted November 30, 2022 Isn’t your truck deleted? 1 Quote Link to comment Share on other sites More sharing options...
fjh Posted November 30, 2022 Share Posted November 30, 2022 13 hours ago, Onyx610 said: Those solenoids are know to be issues too. Not saying you have an issue from what I see though. From what I have observed Correct me if I'm wrong ! the temps are monitored by the ECU if there were an issue it would show on the dash! 1 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted November 30, 2022 Share Posted November 30, 2022 3 hours ago, fjh said: From what I have observed Correct me if I'm wrong ! the temps are monitored by the ECU if there were an issue it would show on the dash! Correct sir Quote Link to comment Share on other sites More sharing options...
Walkyrie_Engineering Posted December 2, 2022 Author Share Posted December 2, 2022 On 11/29/2022 at 8:44 PM, Onyx610 said: Isn’t your truck deleted? I appreciate all the feedback, yes this truck is deleted, and I see I have been a little more on the paranoid side I wasn't sure what was normal for the MP8 temperature wise, but if it seems to be within normal operating conditions then I can relax a bit. As you may know I just had to replace the head on this truck, and would like to avoid doing such again any time soon🙃 Quote Link to comment Share on other sites More sharing options...
mdixon Posted December 2, 2022 Share Posted December 2, 2022 4 hours ago, Walkyrie_Engineering said: I appreciate all the feedback, yes this truck is deleted, and I see I have been a little more on the paranoid side I wasn't sure what was normal for the MP8 temperature wise, but if it seems to be within normal operating conditions then I can relax a bit. As you may know I just had to replace the head on this truck, and would like to avoid doing such again any time soon🙃 Valve troubles? I've got 1 down and 1 just back from mack for cracked exhaust valves. Quote Link to comment Share on other sites More sharing options...
fjh Posted December 2, 2022 Share Posted December 2, 2022 5 hours ago, mdixon said: Valve troubles? I've got 1 down and 1 just back from mack for cracked exhaust valves. Deleted? Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted December 2, 2022 Share Posted December 2, 2022 (edited) 3 minutes ago, fjh said: Deleted? Yup, I think from what I understand those deletes are good for deleting exhaust valves/pistons… Edited December 2, 2022 by Onyx610 Spellings 2 Quote Link to comment Share on other sites More sharing options...
mdixon Posted December 2, 2022 Share Posted December 2, 2022 2 hours ago, fjh said: Deleted? No deletes, corporate fleet. Quote Link to comment Share on other sites More sharing options...
mdixon Posted December 2, 2022 Share Posted December 2, 2022 They're also 2010s if that matters, no def. Quote Link to comment Share on other sites More sharing options...
fjh Posted December 2, 2022 Share Posted December 2, 2022 30 minutes ago, mdixon said: They're also 2010s if that matters, no def. k intermittent issues with valves ! Not unusual ! Shit happens! 1 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted December 2, 2022 Share Posted December 2, 2022 11 minutes ago, fjh said: k intermittent issues with valves ! Not unusual ! Shit happens! Thought you were asking if walkyries truck was. My bad Quote Link to comment Share on other sites More sharing options...
Walkyrie_Engineering Posted December 2, 2022 Author Share Posted December 2, 2022 9 hours ago, mdixon said: Valve troubles? I've got 1 down and 1 just back from mack for cracked exhaust valves. Yeah I had the # 5 cylinder exhaust valve get a big chip missing... funny I never found the chip Quote Link to comment Share on other sites More sharing options...
mdixon Posted December 2, 2022 Share Posted December 2, 2022 (edited) 17 minutes ago, Walkyrie_Engineering said: Yeah I had the # 5 cylinder exhaust valve get a big chip missing... funny I never found the chip It went out the other side. Any damage to the turbine? You say deleted so it didn't smash into the DOC, or go back through the intake via the EGR Both of our failures are on cylinder #5 too Edited December 2, 2022 by mdixon Quote Link to comment Share on other sites More sharing options...
fjh Posted December 2, 2022 Share Posted December 2, 2022 1 hour ago, mdixon said: It went out the other side. Any damage to the turbine? You say deleted so it didn't smash into the DOC, or go back through the intake via the EGR Both of our failures are on cylinder #5 too That is weird the last truck we had at our shop dropped a piece ended up taking out the piston, liner , head and turbo! No# 5 and one other #5 seen it happen to other cyls as well don't think its Cyl Selective! just shit happens! I do however think it is worse if engines are deleted and don't get programed correctly for the delete ! I have seen a half dosen ISX heads ruined by it! Quote Link to comment Share on other sites More sharing options...
Walkyrie_Engineering Posted December 14, 2022 Author Share Posted December 14, 2022 On 12/2/2022 at 3:11 PM, mdixon said: It went out the other side. Any damage to the turbine? You say deleted so it didn't smash into the DOC, or go back through the intake via the EGR Both of our failures are on cylinder #5 too The turbo did start leaking oil I ended up replacing it in this debacle Quote Link to comment Share on other sites More sharing options...
Walkyrie_Engineering Posted December 14, 2022 Author Share Posted December 14, 2022 On 12/2/2022 at 4:27 PM, fjh said: That is weird the last truck we had at our shop dropped a piece ended up taking out the piston, liner , head and turbo! No# 5 and one other #5 seen it happen to other cyls as well don't think its Cyl Selective! just shit happens! I do however think it is worse if engines are deleted and don't get programed correctly for the delete ! I have seen a half dosen ISX heads ruined by it! I have seen a lot of correlation to the #5 cylinder from other people. I wonder if there's a specific reason or if it's just a strange coincidence Quote Link to comment Share on other sites More sharing options...
mdixon Posted December 16, 2022 Share Posted December 16, 2022 On 12/14/2022 at 10:35 AM, Walkyrie_Engineering said: I have seen a lot of correlation to the #5 cylinder from other people. I wonder if there's a specific reason or if it's just a strange coincidence I'd bet it's from the direct exit into the egr valve, high speed gas burning the valve on the way out, or some kind of supersonic cavitation from the pressure difference in that spot in the manifold. 1 1 Quote Link to comment Share on other sites More sharing options...
Walkyrie_Engineering Posted December 23, 2022 Author Share Posted December 23, 2022 On 12/15/2022 at 8:52 PM, mdixon said: I'd bet it's from the direct exit into the egr valve, high speed gas burning the valve on the way out, or some kind of supersonic cavitation from the pressure difference in that spot in the manifold. That does make sense, I wonder if a redesign of the manifold would fix this. Or maybe some kind of baffle plate like thing to go between the manifold and egr valve Quote Link to comment Share on other sites More sharing options...
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