Quote:
Originally Posted by omgboost
I don't have either but have been viewing the forums quite a bit. I think most of the issues have been solved due to the N63 campaign. Although I think the V8 owners still need to do the valve stem seals? every once in a while and that's pretty pricey.
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Yup n63 needs valve steam seals typically every 70k miles. Also it suffers from oil leaks, like most bmw engines. I’ll also state I’ve owned two e70 x5s and they seem to kill alternators every 40-60k miles.
Theoretically, a low temp thermostat and some atp-205 to add elasticity back to the seals goes a real long way to solving the valve stem problem. Worked well on my Smokey n62. The low temp thermostat reduces engine operating temps, which slows the rate the seals looks their flexibility and helps prevent the problem,
Also the PCV lines, and other plastic parts in the engine bay tend to degrade and become very brittle with age.
Basically every bmw v8 seems to have crappy oil seals. It kills me how many $8 parts, especially seals that fail and take me all,day to replace...
But I love my x5s and think their great suvs in spite of these annoyances. Really other than expensive to repair seals, these cars are pretty robust.