Engine ping under light throttle

Jhill

He is thinking you are hearing the vvel system and not ping as it is known to be a noisey valvetrain. I was on the assumption you guys are already running a high grade oil (I hope).

ZoomZ

Yes, as Jhill has described. The VVEL was designed with the idea that its components surface coating ( Nissan calls it Diamond like coating) would actually interact, on a molecular level, with the Ester oil and provide a "constant" film of lubrication to prevent this "tick" "chatter" "interference" or what ever you like to call it.

It was more apparent in the Infinity Cars with the VQ37VHR engine, because the cars had better sound insulation than the Z, so the theory is, those owners picked up on it versus us deaf Z drivers.

FERRARI

You guys don't know about a one of a kind product .....so you start badmouthing it? I have a Doctorate in Chemistry......do you???????

https://www.youtube.com/watch?v=gIEZ58wnUyM

its not an additive really, you add it to your oil but it blends with metal not oil. they put it with oil and it still coated the metal while they added lucas oil additive to same oil and nothing doing. THIS STUFF DOES NOT STICK WITH OIL! it coats the metal.

and no you dont add it every oil change. every 4th oil change they say to add it again to have it work the best and for $20 you get like 10oz and you add 2oz of that stuff to every quart thats in the engine, it can also be used in the transmission and other parts. but there is also a 32oz bottle for $32, which is what i got. once the stuff is added its there, it will never come off unless some kind of cleaner is used. but they still say add it every 4th oil change, which means 4 oil changes before adding again, so it performs at its best.
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ZoomZ

No offence meant, nor bad mouthing intended. I simply implied that it's "snake oil" .

I'm not a chemist, but I've been around the block a few times. Worked with Synthetic oils for over 25 years.

We've seen and heard it all. All sorts of advertisements, videos, blogs, etc etc etc.

From Slick 50, SynLube, Camguard, Zmax, to false advertisements by big oil that they are 100% synthetic. There is literally 1000's of threads on this topic.

They all say they coat the metal. So some or most of us have become Skeptical over the years.

No one has ever witness this miracle solution for themselves. ALL WORDS.

I fully respect your profession and your understanding of the chemistry. Its all great on paper, but without independent review and proof, it's just that, a piece of paper.

Good oil, with proper additives is all you'll ever need. Specially one that is engineered by the designers of the engine.

Sorry for the thread jack OP. My intentions was to see what oil you are running and that you are aware of the VVEL issue. It seems that you are and can say the noise is not from there.

Besides trying to get a higher Octane gas, I am out of suggestions for you.

Good luck and let us know what you find.

FERRARI

Have always used Valvoline full synthetic oil in all of my cars and tractors...........and I would like for you explain one thing for me..........please...........You see you add two ounces of Motorkote for each cylinder........12 ounces for a Z..........and BEFORE you add the Motorkote the oil is to the FULL LINE...........Then you drive the car for about 10 minutes...........at the end of the ten minutes the oil is NO HIGHER ON THE STICK..........There is no smoke..........but you can tell right away how much less the engine noise is...........................Please tell me where the Motorkote goes.........no other addative does this.......??????????????????????????

Optimiser

I used to use "Slick 50" in my Datsun 1600 (180B "worked" motor) back in the early 80's on advice from the mechanic who built the motor. (I think a Slick 50 sales rep did a job on him). It did seem to lubricate the motor better as the revs at idle went up and had to be adjusted. It was also claimed that if you lost oil pressure or your sump ran dry for some reason, it would allow the engine to keep running for some minute without damage! Luckily I never had to test that.

FERRARI

That is not an answer to the question that I asked...................

ZoomZ

I don't know, nor will I pretend to know. If it works for you, and you have a scientific explanation for it, great.

I had a 1996 Nissan D21 4x4 pick-up truck with 310,000KM's (192,600 Miles) !!! It was recently in a car wreck and the Insurance company would not repair it due higher cost than vehicle.

I had that truck for 20 years. After the first 5000 km on Conventional oil, I switched to Mobil 1 10W30 Synthetic. Changing every 5000km with new Nissan filter for 20 years

Never leaked oil, never burned oil, never made metal, and compression remained the same as day 1 !!!!! Looking inside, under the rocker cover....No sludge, just normal used oil color.

Was it the oil?? Don't know. Was it the engine quality? don't know. Trust me, I did not baby that engine as far as driving goes. Just changed the oil and regular maintenance.

However, it would be fair for me to say that my diligence with oil changes and use of a "Higher quality" oil, had something to do with it. No additives, no mystery. Not going to show proof, just my experience.

I'm sure Motorkote is a fine product, but personally, I think you are wasting money. Get REDLINE 5W30 if you want to spend more than Valvoline.

I think if you do the math, a quart of Valvoline and your Motorkote will probably be equal or more than a quart of REDLINE or Nissan Ester oil.

They have the same wizardry for Piston Airplane engines: Aviation - Camguard

They all say the same thing.

BTW, are you a glider pilot?

FERRARI

Just can not answer that can you ???????? And Yes I am a sailplane pilot........

Optimiser

SouthArk370Z

I've never used Motorkote but their web site screams "snake oil." Found a link to request an "SDS", hoping it would be the same thing as an MSDS, but was sent to some kind of messaging page that made my malware protection squawk.

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nis350

Ok.. motorkote may take care of the vvel noise.

Let's get back to the engine ping condition....

Optimiser

ZoomZ

Are you able to get higher than 91?

Do you know any airport that sells Auto or "MOGAS" at small airports? They are (Should be) Ethanol free and usually 92 Octane or higher.

Don't worry, it's not jet fuel or Avgas, but plain old car gas. Just no Ethanol and usually higher than 92. Not sure if it's possible in California. But check.

Maybe a quick drive to Oregon, if they sell higher than 91.

Jhill

Use whatever you wish it's just my opinion to buy and oil and pay more to add stuff to it when you could just buy a top grade oil that you can ensure all additives are blended to work together.

Just doing some light digging there is some speculation that there is chlorinated parrafins in motorkote (from independent lab test on bobistheoilguy) which can cause corrosion.

https://www.expeditersonline.com/for...bricant.49273/

Scroll to existenz post for links to other relevant data.

If you believe in it and think it works then great go ahead but I'll just rather stick to something developed with all additives working together and have multiple long term test data to back up claims.