看看這個，的勤換油；

Is this a QX60 by chance with the VQ35DD engine? This engine was put into production starting in 2017 in the Nissan Pathfinde, Infinity QX60, etc.

If it is, this has got to be around 10 instances now where I've heard of this specific engine smoking like a chimney or sludged up to the point the only way to fix it is replace the engine. This is happening at low mileage as well, but I think 20K miles is the lowest I've read of yet. Most of the others were in the 30-50K mile range, but those folks at least did some oil/filter changes. If she indeed never changed or checked the engine oil in ~3yrs/20K miles, that engine, regardless of what it is, is probably toast.

I own a 2019 Pathfinder with this direct injected engine and I do know it blackens the engine oil quickly. I don't use the recommended 0w20 oil and I don't do 5000mi OCIs. I do them no later than 3500mi and I use 5w30 synthetic.

所有跟帖： 

• 2019 QX6車主手冊寫著5000邁/6個月更換合規機油及油濾，除非有已知引擎痛點，否則過勤也沒必要。 -Oneshotkill- ♂ (153 bytes) () 04/30/2023 postreply 11:54:34

• 這個好。 居然建議30K換空濾。LOL。看來原裝的不是合成油。真器拍。 -PrimeryColor- ♀ (0 bytes) () 04/30/2023 postreply 12:25:55

• 現在都搞小發動機Turbo，進氣阻力越低越好。 -soccer88- ♂ (0 bytes) () 04/30/2023 postreply 12:36:39

• 謝謝。以後會的。 -SNHmom2015- ♀ (0 bytes) () 04/30/2023 postreply 12:02:35

• 改用更粘稠的油？會不會更容易產生sludge ？ -TBz- ♂ (0 bytes) () 04/30/2023 postreply 13:56:06