DaytonaRS7
Full Access Member
I have 75k on my 2013. Never touched the water pump or crossovers. Both look fine and I have pressure tested the cooling system. Easy to test with a vacuum coolant filler.
I have done all the fluids. Rear, middle, front diffs, xfer case, transmission pan and fluid twice, coolant, steering fluid, brake fluid. Replaced the rear EAS valve block, it was dirty but probably didn't need changed, my EAS calibration was off and causing the rear to droop only after a few days of sitting around. IID tool fixed that. Air filters, oil changes 5-7k miles with mobil 1 EP 5w20.
suspension arms still seem fine, which kinda shocks me given how much trail time I have had bouncing around on rocks and such. But I have no knocks or noises.
My rig basically sits in my garage getting love and random maintenance/mods unless it is on a long camping/touring trip. It doesn't get used as a daily. So it is a bit odd in how it wears. One day it gets thousands of miles in a week, put into mud bogs, winched out, or on a rocky trail destroying tires, or in thick brush getting trail rash. The next it gets polished out and detailed with Zaino, paintless dent repair, parts replaced, chassis cleaned, painted, protected, fluids fresh and sitting still for months. So it doesn't wear like a normal vehicle at all.
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i am big fan of the coolant vaccum fill tool, but keep in mind that the coolant sytstem is run under pressure. the vaccum tool could pull the seams of those pipes tighter and hide possible leaks. under pressure any cracks will expand.
you seem to DIY alot of maintenance....you may as well just replace the pipes. for 3 hrs and $100, you could save yourself needing an engine.