1000 mile assessment of Royal Purple

[Jacko3]

Folks and everyone with G-35 engines, being pleased with Royal Purple is a huge understatement. This oil is fantastic. I have more confidence flogging my car without a worry in the world---I drove it all weekend and i can't tell you how big the grin---from ear to ear, really is. And the response of my engine is practically instantaneous. Let me give you an idea of how good this oil really is---after 2 - 3 hours of having the car parked, it takes less than 1 minute to get the car warmed up with the RPM dropped to about 900--thats how fast it warms up after parking car from a spririted driving session.

First, let me start by saying very clearly that the G-35 engines have excellent internal plumbings for a street car. Mobil 1 is just an expensive high end conventional oil that builds carbon in your engine and ring seals but at a much slower rate than regular conventional oil. Why do i say this?

Well, I discovered that the G-35 efficiently blows out any carbon build up in its internals if you use a good fuel injector cleaner or an oil that cleans the internals properly. How do I know this? Next time you use a fuel injector cleaner in your G, go out and flog the car for about two days and then let the engine cool completely. Remove the dipstick and you will see a very thin layer of carbon accumulated in the dipstick.

I discovered this phenomenon after using Lucas Injector Cleaner in my G about 7 months ago. I noticed the same thing after I switched to Chevron Supreme with Techron from BP gas. Then I noticed the same event after I switched from Mobil 1 EP Synthetic to Royal Purple--it cleaned out the carbon that was probably forming in between the rings due to the use of Mobil 1 EP Synthetic

However, the carbon deposits for the injector being cleaned will accumulate somewhere at the top portions of and lightly throughout the dipstick, while that for the pistons will accumulate along the length of the very edge of the dipstick blade--very hard to notice if you just quickly check the oil level and put the dipstick back. Royal Purple literally pushes out the dirt caused by Mobil 1 Syhtetic.

Once you clean the carbon on the dipstick with a rag, you probably won't see the carbon anymore. However, you will have to flog your car initially to get the cleaning effects going.

In addition, I also went ahead and added a second spark plug anti-fouler to my test pipes, and my gas mileage, as always since the installation of my test pipes, is super good---excellent, an no CEL. Flogged my car for 1 hour yesterday (Sunday afternoon) and all i had to put in the car to get it back to full tank was $8 of Chevron Supreme with Techron @ $2.30 per gallon---unbelievable. I know my car is running a little lean, but if a little lean will give me more power and better gas mileage, then, so be it. I am covered with excellent 93 Octane rating and Royal Purple.

Secondly, it appears Royal Purple does not turn as black as Mobil 1 EP Synthetic or regular Mobil 1 Synthetic, at least in this first 1000 miles--I will see how that goes after 3000 miles. This may have something to do with the oxidation capability of both oils. Royal Purple seems to be a better resistor of oxidation than Mobil Synthetic versions. And for some reason, my transmission is talking even better to my engine these days--it would appear, and as I have said on several occassions, that the 6MT transmission performance seems to partly depend on the state and performance of the VQ engine. However, I am also noticing now that I might be needing a sort of a damper for the engine to keep it from moving excessively while I shift at high RPMS. Just my observations so far.

Its amazing how a single oil can get a lot of things going the right way.

One more thing, the G-35 Engine is known to loose at least 0.25 quarts of oil between oil changes as stated in the manual. Well, as I head towards the 3,000 mile mark with Royal Purple, i will be watching to see if this will be the case with Royal Purple. if this oil passes this last test, then i may have to write Nissan Motor Company personally, asking them why they never considered using Royal Purple in the VQ engine.


Modified by Jacko3 at 3:16 PM 11/10/2008

[Tampa G35 Sedan 6MT]

Nice work Jacko!

You are the OIL MAN

[Sentientbydesign]

Sorry Jacko, you knew I'd come in here and rain on your parade.

Trying to determine carbon build-up or the amount of cleaning, or where the carbon is being cleaned from by analyzing suit on a dipstick has little to no factual basis.

ESPECIALLY, with our dipsticks being as tempermental as they are.

I will admit that the mobil 1 seemed to get dirty quite fast, but this could be from it's higher detergency abilities and not some fault of the oil.

As for your fuel economy. Please do us all a favor and do a full tank measurement. Just go fill up. Mark your mileage. When you fill up again (preferably after half a tank or so), mark down the number of gallons pumped and the new mileage.

We will ALL be very appreciative as this will give us two things:

1) The accuracy of the NAV fuel economy gauge.

2) Your true fuel economy with your mods.

The second will really help the whole G community.

I'm curious why your idle is at 900 rpms? Mine sits between 500-650.

Lastly, your transmission is a courier of power from the engine to the driveshaft. To my knowledge, it has NO configurable settings that the ECU controls.

[Jacko3]

My idle sits at 850 exactly. I could easily drive off at 900 RPM. However, i give a few more seconds to come down to 850 before i leave--just a habit i formed.

Nate, once Supreme gas price gets to $1.90 cents , i will then embark on the experiment--seriously, I wil be doing the gas thing calculation very soon. My assessment this time had nothing to do with the NAV system in the car--just observation of typical driving distance and the needle not moving at all. Nonetheless, my Tech has also confirmed that the NAV data is probably 1 - 1.5 MPG away from actual results. So, If I am getting 30 MPG on my NAV as I did sometime ago at 70 miles per hour, then i am in reality getting about 28.5MPG---slightly higher than what Nissan claims the car is capable of doing, and I bet the cat converter is the culprit for the poor gas mileage int he G-35.

You are right about the transmission as far as it being a courier. However, subtle changes in engine performance and behavior can also be couriered or transferred to the overall transmissio performance as well, at least in terms of how weel or poorly it shifts. No other example was clearer to me on this fact after I compared the performance of my shifting and clutch with an engine that consumed oil versus one that did not consume oil. Remember, I had my engine replaced as well.

But I will be doing the gas mileage test, for real, as I think gas prices have come down a great deal. I shall keep you all posted on that one.

As for the carbon deposit on the dipstick, I know what I saw. It may not be factual to the extent that I cannot tear down the engine to observe what is going on inside the engine. But i do know there was carbon and perhaps other elements on the dipstick immediately after some changes were made, which were no more physically visible after the dipstick was cleaned. My engine has over 20K on it since it was installed, and I doubt the clean dark material is metal filings after flogging the car for so long.

Like i said, I used Lucas injector cleaner, I also used Chevro with Techron, and I have used Royal Purple, and each time immediately after use, there is a carbon deposit on the dipstick. There is a lot we cannot confirm about these cars for so many impractical reasons to include time and finances. However, careful observation and small but inconclusive experiements, together with a highly tuned sense of the car's behavior while driving can go a long way to provide some type of information that may one day prove or disprove the phenomenon/observation. Thats why i put the information out there. I said it is carbon because it is dark and not dirty. An oil sample test would be great if I ever get to that.


Modified by Jacko3 at 4:06 PM 11/10/2008

[Sentientbydesign]

I think you've misinterpretted my suggestion.

I'm not telling you to drive 200 miles just to figure out what your fuel economy is. I'm asking you not to fill up until you've reached the half tank mark and to note how many miles you traveled and how much gas was consumed.

Maybe that's what got us off on an argument before. It would be wrong of me to ask you to spend $40 just to verify fuel economy. BUT if you're going to drive that 200+ miles in the next 2 weeks anyways, then all I'm asking is that you notate it and report back to us.

[Jacko3]

Nate:

I will record the mileage and amount of gas used and I will report it soon. I think that would be helpful to everyone.

[joe603]

Use Royal Purple....if only to not support Exon Mobil.

[soul_hfk]

whats steves take on what oil is better

[SVTCOBRA]

Have a neighbor that is/was a BMW tech up north (before wising up and moving south) and I've seen a BMW engine that he took apart that had been serviced with Kendal dino juice every 3K miles and it looked brand new inside!. And, it had well over 150K miles. It's just really hard for me to comprehend the difference going from M1 Syn to Royal Purple can make. Not doubting you, I'm just and typing.......oops, got to let the dog back in...

[Jacko3]

Have a neighbor that is/was a BMW tech up north (before wising up and moving south) and I've seen a BMW engine that he took apart that had been serviced with Kendal dino juice every 3K miles and it looked brand new inside!. And, it had well over 150K miles. It's just really hard for me to comprehend the difference going from M1 Syn to Royal Purple can make. Not doubting you, I'm just and typing.......oops, got to let the dog back in...

RP makes the car wanna rev up some more through emm.....oilification. RP is a better engine condom than M1---better lubrication.