Nissan 370Z Forum - View Single Post

jpit · 10-11-2009, 10:08 PM

You only need to remove the four bolts closest to the rear of the car to change the oil and filter. The shield has a crease in it designed to fold back. Also, I went with Redline at 4000 miles but after reading an interesting article about the Nissan ester oil I have decided to go back to that. From a well-known Nissan tuner:

"What is Nissan's special oil? The oil was developed to complement Nissan's Hydrogen free DLC coating used on the cam followers in the QR25DE engine, the VQ35HR and the VQ37VHR engines. DLC stands for diamond like coating, which is an amorphous layer of carbon crystals with hard smooth properties much like diamond. Most of valve train friction is created by the interface between the cam follower and the cam lobe. DLC is very slippery stuff and Nissan uses it to reduce valvetrain friction to improve fuel economy, reduce emission and increase power."

"In lab testing of test coupons, the Nissan Super oil with hydrogen free DLC coating had the friction reduced by 60-75 percent over conventional oil with no coating. This equated to a around a 40% reduction in total valvetrain friction in a real motor and a 20-25% reduction in total friction of the motor! This is a significant result which should show real gains in fuel economy and probably something like 1-1.5 hp per cylinder at high rpm over an uncoated valvetrain with conventional oil. If this is worth something to you then yes, the expense of the oil is worth it! Now the DLC coating still works at reducing friction with regular oil just not as amazingly well. Not using the Super oil will not cause you engine to wear out prematurely or anything like that but it probably will wear slightly more, particularly in the valve train, probably at a level that doesn’t matter much."

10-11-2009, 10:08 PM	#3 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	You only need to remove the four bolts closest to the rear of the car to change the oil and filter. The shield has a crease in it designed to fold back. Also, I went with Redline at 4000 miles but after reading an interesting article about the Nissan ester oil I have decided to go back to that. From a well-known Nissan tuner: "What is Nissan's special oil? The oil was developed to complement Nissan's Hydrogen free DLC coating used on the cam followers in the QR25DE engine, the VQ35HR and the VQ37VHR engines. DLC stands for diamond like coating, which is an amorphous layer of carbon crystals with hard smooth properties much like diamond. Most of valve train friction is created by the interface between the cam follower and the cam lobe. DLC is very slippery stuff and Nissan uses it to reduce valvetrain friction to improve fuel economy, reduce emission and increase power." "In lab testing of test coupons, the Nissan Super oil with hydrogen free DLC coating had the friction reduced by 60-75 percent over conventional oil with no coating. This equated to a around a 40% reduction in total valvetrain friction in a real motor and a 20-25% reduction in total friction of the motor! This is a significant result which should show real gains in fuel economy and probably something like 1-1.5 hp per cylinder at high rpm over an uncoated valvetrain with conventional oil. If this is worth something to you then yes, the expense of the oil is worth it! Now the DLC coating still works at reducing friction with regular oil just not as amazingly well. Not using the Super oil will not cause you engine to wear out prematurely or anything like that but it probably will wear slightly more, particularly in the valve train, probably at a level that doesn’t matter much." Last edited by jpit; 10-11-2009 at 10:59 PM.