That happens every year on the newer quadtracs after they sit through a freeze thaw they can get coolant in the oil not saying it’s your problem but it might not happen again right away
2026-01-24 02:48:48
1
Jayden_Seth :
Likely a liner o-ring in my opinion
2025-11-25 03:29:06
31
Randall :
Why would you put that coolant mixed with oil back in your rad
2025-11-26 17:30:46
4
Mark A. :
Maybe it’s an injector cup.. could drop a liner, but why does everybody think it dropped a liner?? Could be a cracked head.. oil cooler, contamination…?
2025-12-08 19:48:26
3
zackshearer1 :
Unsure if you can pull the oil pan in chassis on older cats but I had a 3306 with a failed water pump mixing coolant into the engine oil, I’d also test the oil cooler in hot water while pressuring it, defiantly not common but they can fail that way as well
2025-11-28 00:21:44
3
Keyton :
Possible water pump? Not sure how they are designed on these older dozers but same thing happened to our CAT D6K2 this spring
2025-12-31 12:50:10
2
Ryzo :
Liner O rings
2025-11-26 05:24:38
2
Dig Bickin :
we call those "buckets" where I come from
2025-11-25 23:37:39
2
AL.FfromtheplanetKevisville :
See if the telltale hole on the water pump is plugged.
2025-12-01 18:38:52
3
Hd :
Water pump shaft seal
2025-11-25 04:39:21
2
OkPanhandler52🚜 :
Can’t drive when it’s hot
2025-11-25 15:09:35
4
Jjolynyk :
Very handy machines for pushing bush but jeeeeeesus they are money pits.
2025-11-25 05:12:43
2
paulr218 :
Best bet would be to drop the front belly pan and drain the oil. Pull a side plate off the oil pan and confirm where it’s comes from before wasting time and money throwing parts at it. Plus this allows you to confirm the repair when done.
2026-01-02 02:27:27
1
Lawson Yatkowsky :
Me after seeing red
2025-12-26 20:47:16
1
Turbo :
Liner fits
2025-12-15 18:46:34
1
bobbyjoe198🕷️🇨🇦 :
Oops 🙊
2025-11-30 19:47:59
1
Riley :
oil cooler
2025-11-26 02:22:48
1
barefootbanditcom :
Exspesive fix
2025-11-25 06:01:30
1
Todd Millard :
Oh boy
2025-11-25 04:50:07
1
Turcan Farms and Mechanical :
If it got real hot good chance its head/headgasket. But maybe can luck out and it is just the water pump
2025-11-25 03:59:28
2
silky smooth :
liner time
2025-11-25 13:36:31
1
G :
liner o rings m8ne did the same
2025-11-25 13:51:28
1
David Hoskins :
Just saw a guy working on an excavator and he pulled the valve cover off and found it was a freeze plug that had come out.
2025-11-25 23:42:11
1
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