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01-08-2020, 02:45 PM | #1 |
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08 Z4, what is the deal with overflow rad tank going bad?
Mine is not leaking or the like on my 08 3.0si but I have seen it out on the net when I have been googling various things about this car.
Should I be worried about it leaking? The car only has 57k miles on it, mostly garage kept for all those miles, living in not terribly hot parts of the USA. How hard of a repair/preventive repair is this? How much are replacement tanks? |
01-08-2020, 05:54 PM | #2 |
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Photos towards bottom, I end up replacing a bunch of hoses with it..
https://www.zpost.com/forums/showthr...t=coolant+leak On top of that I did the belt tensioner and the belt at the same time, since it was all together.. I didnt do the water pump but can easily do it if I need to.. Most were bmw oem parts, use substitute when it was out of stock, I used fcp euro, life time warranty on partys. Besides brakes.. this is the most expensive maintenance out of warranty I did so far on 2007 car 14.89 - Belt - Purchase 2018 45.59 - Tensioner 61.44 - Coolant x3 bottles 10.00 - Distilled water x4 bottles 111.83 - Expansion tank #17117573751 19.08 - Cap #17117639022 57.99 - Mahle Thermostat 64.78 - Hose #17127545263 64.78 - Hose #17127537717 4.65 - O Ring #11537545278 1.38 - Clamp #07129952119 x2 67.37 - Hose #11537545890 51.81 - Hose #11537521049 25.00 - Bib for Hose #11537545890 - End up not using 13.99 - Fan Switch Sensor #13621433077 74.50 - Hose #17127545277 13.59 - Coolant Sensor #17137553919 37.95 - Mahle Automatic Oil Cooler Thermostat #17111437362 - Recommended
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01-08-2020, 07:29 PM | #4 | |
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01-09-2020, 10:42 AM | #5 |
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01-09-2020, 01:05 PM | #7 |
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Its one of those things that can go any day.. mine lasted 12 years before failure.. so either you fix it now or fix it when it breaks. I fixed mine after I saw the pool of coolant when I got home one day...
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