CX-5 Owner ages?

[jadmt]

Surprisingly, the 2.5T has been out for 10 years and I haven't found any turbo failures in online discussions. You would expect to see some.

ditto. I never understand the argument they need more upkeep. other than sparkplugs they have the same service intervals for oil and coolant etc.....

 

[zx10guy]

ditto. I never understand the argument they need more upkeep. other than sparkplugs they have the same service intervals for oil and coolant etc.....

It's because of the higher operating temps of a turbo. Turbos get extremely hot. The oil lubricating the bearings in the turbo is the exact same oil that lubricates the engine. Same with coolant. The newer turbo designs use engine coolant to cool off the turbo under operation.

With the higher temps, there is going to be higher likelihood of oil break down. There used to be these things called turbo timers which were devices added to a turbo engine to keep the engine running so the turbo and oil can cool down. This was done because there was many incidents of oil just sitting on the bearings in the turbo after engine shut down that were cooking off.

Don't know if the 2.5T equipped cars have this, but my 135i has an oil temp gauge. It's provided to give you a visual indication on when it would be appropriate to run the engine harder or if the oil temps get too high. On spirited hard drives, I do let my car sit in the garage for a few minutes idling so the engine oil temps can come down. And some times I leave the hood popped up partially to let all the heat vent out.

 

[jadmt]

It's because of the higher operating temps of a turbo. Turbos get extremely hot. The oil lubricating the bearings in the turbo is the exact same oil that lubricates the engine. Same with coolant. The newer turbo designs use engine coolant to cool off the turbo under operation.

With the higher temps, there is going to be higher likelihood of oil break down. There used to be these things called turbo timers which were devices added to a turbo engine to keep the engine running so the turbo and oil can cool down. This was done because there was many incidents of oil just sitting on the bearings in the turbo after engine shut down that were cooking off.

Don't know if the 2.5T equipped cars have this, but my 135i has an oil temp gauge. It's provided to give you a visual indication on when it would be appropriate to run the engine harder or if the oil temps get too high. On spirited hard drives, I do let my car sit in the garage for a few minutes idling so the engine oil temps can come down. And some times I leave the hood popped up partially to let all the heat vent out.

the owner's manual calls for the same interval for coolant and oil...coolant is 10 years 120,000 for both. again I would love to see some real evidence that they are more expensive to maintain but I have not seen that. As @N7turbo mentioned I have never seen any evidence or factual data showing they have issues. I have done oil analysis and so far there is nothing to indicate that excessive heat is causing a break down in oil at least between my 5000 intervals.

 

[zx10guy]

the owner's manual calls for the same interval for coolant and oil...coolant is 10 years 120,000 for both. again I would love to see some real evidence that they are more expensive to maintain but I have not seen that. As @N7turbo mentioned I have never seen any evidence or factual data showing they have issues. I have done oil analysis and so far there is nothing to indicate that excessive heat is causing a break down in oil at least between my 5000 intervals.

We can disagree on these aspects. I've provided exact reasons why a turbo engine does require a bit more TLC. With the owner's manual, I'm sure there are many of you that are ignoring the manual because your own experience/knowledge says it's a bad idea. There are many manufacturers that say lifetime trans fluid so no need to change. Or 10,000 mile oil change intervals are recommended. Even the debate with whether to use 0w-20 or 5w-30 oil. The manual calls for 0w-20 but how many people here are ignoring that.