TopFuel

Your car is not a phone booth either. I modified my pocket to carry an M-203.

Thank you bennyr!! I too am an old guy. I am currently reading through the Titan owner forum threads concerning the GDI issues. IMO, Nissan is being very proactive in replacing defective engines. I'm a mechanic, not a lawyer, but this seems to be an intelligent business decision to avoid class action lawsuits, while retaining consumer confidence. I agree, this is a flawed design bought about by CAFE and emissions standards. The VK56VD also has a computer controller VVEL variable intake valve timing lift apparatus somewhat similar in theory to the BMW vanos system. Sad. The engineers know how to built a 2 million mile class 8 diesel and an automotive 400,000 mile gasoline engine. They just can't do that while also having the exhaust pipe emitting cleaner air than what is flowing through the intake air filter. I used to buy Cummins powered duallies. You couldn't melt a diesel and pour it on me today. The VW Dieselgate was the most well publicized, but every diesel manufacturer (that I'm aware of) was fined for emissions violations. Caterpillar threw up their hands and walked away from the over the road market. Navistar (International) tried meeting the new diesel standards with copious EGR and a seventh injector spraying raw fuel into the exhaust (instead of DEF) and lost over one Billion dollars... along with their reputation. The EPA fined everyone. Bottom line was the ridiculous standards could not be met without cheating. As a bonus, 18 wheelers went from getting 6.5 mpg to 5.5 mpg or less, plus drivers were forced to park on the shoulder of the road for 30 minutes while their engine went through a forced regen process. Sorry to go off topic. Just some of the backwash as to how we got to where we are today trying to burn gasoline like it is diesel.

Yes, the factory PCV hoses can be disconnected, rotated, and easily and plumbed into a catch can system. Fuel system additives will only contact the bottom of the intake valve. In the '70's GM took Oldsmobile gasoline engines and retrofitted them to burn diesel fuel, instead of going with a "clean sheet" design. They were a disaster. Now the process seems to be flipped with diesel style direct injection of gasoline, but using a spark plug to initiate combustion instead of cylinder temperature. On turbocharged GDI engines (looking at you Ford) low speed pre-ignition has also become a problem. Bennyr, I would have infinitely preferred a port injection system over GDI but I needed and immensly enjoy the torque and acoustics of the V8 engine. I classify cleaning the intake valves at 50k intervals as a DIY preventative maintenance procedure. Not happy about it, but while deciding on which van to buy, I didn't want my feet to be the first thing to arrive at an accident. (Looking at you GM.)

Here is a video link to a 2018 direct injected 44,000 mile VK56VD engine. The cylinder scoring problems are in cylinder number 7. That is the rearmost cylinder on the driver's side of the engine. Examine the PCV plumbing and vapor distribution dynamics on each side of the VK56VD engine. I own a new 2019 VK56VD. Using my God given common sense and understanding of gravity and fluid dynamics, I have decided which cylinder I believe is going to carbon up first, worst, and also operate at the highest temperatures. Every catch can video I've watched is showing the cans are for a fact filtering out and collecting a percentage of the oil vapor contamination. Uncertain of the implications of installing catch cans while the engine is still under warranty coverage. https://www.youtube.com/watch?v=9-OYXvWVTzQ

"The Engine Knock Thread" on the Titan talk forum is currently 87 pages long. Check the build date before buying a VK56VD engine. Cylinder scoring problems requiring short block engine replacement. https://static.nhtsa.gov/odi/tsbs/2020/MC-10174416-0001.pdf

West Tennessee.

Don't kick yourself. I'm a new owner/member here too. There have been serious problems with the new VK56VD engine. The Titan owner forums would probably have more performance upgrades for your '16 engine that what you will find here.