When did your crossover go and is your climate HOT (CA, NM, AZ, TX, LA, etc) or COOL (PNW, northeast, etc)

When did your crossover go and is your climate HOT (CA, NM, AZ, TX, LA, etc) or COOL (PNW, northeast

  • 0-25K miles (HOT)

    Votes: 0 0.0%
  • 0-25K miles (COOL)

    Votes: 0 0.0%
  • 25K-50K miles (HOT)

    Votes: 1 7.7%
  • 25K-50K miles (COOL)

    Votes: 0 0.0%
  • 50K-75K miles (HOT)

    Votes: 6 46.2%
  • 50K-75K miles (COOL)

    Votes: 1 7.7%
  • 75K-100K miles (HOT)

    Votes: 4 30.8%
  • 75K-100K miles (COOL)

    Votes: 0 0.0%
  • Over 100K miles (HOT)

    Votes: 1 7.7%
  • Over 100K miles (COOL)

    Votes: 0 0.0%

  • Total voters
    13

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Joe77

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I did my front crossover when I replaced the original water pump at 85K miles. The flanged ends were a bit brittle and were starting to deteriorate. I think it was definitely at the very end of its life. I did the rear crossover/heater manifold at 95K miles and it still looked new. I know for sure neither had ever been replaced because I bought it from original owner and friend and know the complete history.
.
 

ktm525

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Could be although bathed on one side by coolant vapours? The failure point point seems to be actual crumbling of the end tube that inserts into block.
 

greiswig

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What I saw when I replaced mine (and it broke) looked more like the rubber O-ring had been leaching plasticizers from the tube. And since the tube is thin right there anyway, to create a recess for the O-ring, it got really brittle and just crumbled. That was at 47k miles.
 

Kelly Barrie

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Honestly, it can vary just based on the nature of the casting process, every so slightly thicker/thinner walls where the seams meet, etc. I replaced both around 60/70k to be safe, front eventually blew around 130k. Mine popped on the freeway, I remember the distinct crunch of hardened plastic as my wheel drove over the remnants underneath. I knew what it was before the coolant light even turned on. Anyway, for peace of mind, I would just replace them every 60-70k it's a PITA to repair when it blows.
 

txfromwi

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2013 & 2015 Houston TX. 2016 Rochester NY
All TX vehicles. - HOT.

The 2013 was done in 2021 at 90K.
Failure was the o-ring in the connection between the water pump and the oil cooler tube.

The 2016 was done in 2022 at 60K.
Failure was the front crossover on the passenger side just outside the o-ring - cracked and falling apart all the way around.

The 2015 is still good and at 41K.
 

mm3846

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Location
LI, NY
I’m in NY, probably doing both this summer some time. 78k, no leaks.
 

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