03-24-2018, 07:33 AM | #23 |
Second Lieutenant
101
Rep 239
Posts |
K, I see. But how to prevent carbon buildup thing happens? Fuel additive maybe? I heard the N55 has less this kind of issues compare to n54, I hope our v8 can do better as well.
|
Appreciate
0
|
03-24-2018, 11:20 AM | #24 |
Banned
1635
Rep 2,995
Posts |
Drive it hard once in a while to heat things up good. But I think bmw increased the operating temp of their Turbo engines to help prevent carbon buildup.
|
Appreciate
0
|
03-24-2018, 12:20 PM | #26 |
Colonel
546
Rep 2,590
Posts |
Never going to create enough heat to have any effect. They wouldn't raise it high enough to be detrimental to other components.
|
Appreciate
1
iconoclast7257.50 |
07-12-2018, 11:30 AM | #28 |
Registered
0
Rep 1
Posts |
I bought my 2013 X5 50i with 56K miles, knowing about the valve stem issue I bought a 3rd party warranty at the used car dealer.
Sure enough at 70K I brought it in and the warranty covered it. But BMW instead replaced the engine with a new one that has a fix for this. They covered 80% of new engine under a one time good faith agreement that had to get approval from headquarters. Looks like old engine valve stem seals go bad because there is a small fuel leak that degrades them over time. New engine is supposed to have a fix for this. So chose new engine over warranty. New engine cost came down from 27K down to about 4K and is now BMWs go to option instead of the 40hr labor needed to replace seals. |
Appreciate
0
|
07-12-2018, 12:01 PM | #29 | |
Colonel
2113
Rep 2,388
Posts |
Quote:
Some noobies will read this and will continue to spread misinformation and panic. |
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|