Pnzoil dino 10W30, 4,506 miles, Infiniti G35

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chinee

chinee

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Mar 4, 2003
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Wellington, Florida
Here's my latest UOA with the entire UOA history for the last 2 years and 34,000 miles. Although I like the way the Pennzoil dino has performed, at least in relation to the M1, I don't regard the results as spectacular. I think the lead and iron wear are still too high.

There's was a spike in the Si on this report, but I suspect that I picked up some crud from around the dipstick hole and slid that into the oil at around 4,000 miles. Would that be enough to elevate the Si to 21?

I've determined that 4K is the max interval for this oil. I'm currently trying out Mobil Clean 5000, and will run for 4K... maybe two fills to compare to the Pennzoil. Then I'll try either the Clean 7500 or switch back to M1, to see how it will do now that there's no question the engine is "broken-in".

Any remarks or comments? I always learn something new over here. Thanks.

-
 
The latest report is the best of all of them, given that dino and PAO are at play here, why switch? (I know, all us BITOG'ers HAVE to switch!
smile.gif
) Kidding aside, PZ 10w-30 is just fine for 4500 miles.

I'm thinking that only GC or Amsoil 0w-30 will reduce wear rates any, if at all.

Ever think of using Lube Control? You should be able to go a fair amount further on PZ than just 4500 miles.
 
Its high..but hasn't hurt you. I would still look at changing the air filter and checking for a leak in the intake. Check the air intake from the filter to the intake.

This engine spits out higher lead. I think your iron is more than fine and so is the lead.
smile.gif
 
Why did the latest sample of Pennzoil 10w-30 thin so much? It's 20-weight now. None of the TBNs of the Pennzoil are very strong for the mileage.
 
What about the moly and calcium as well? Those levels are higher in relation to the previous UOA. And as far as a leak in the air intake is concerned, I doubt it. I'll take a look tomorrow but I haven't fiddled around the filter or intkae at all in the last few months.
 
Looks like your engine is breaking in well and wear metals are decreasing with each change.
I have seen this on my 2001 Miata. Each UOA is better than the last up to 50,000 so far.
 
The Silicon is from gasket leeching, typical of many new Nissans and Toyos.

D-4739 TBN of 1.0 after only 4500 miles??? What type of driving have you been doing? How long are your trips???

Might want to consider trying the new GC 0w-30 in this app after your two Mobil Clean 5000 runs to see how well it performs. I think the GC will perform better because it is a 0-XX.

Michael
 
Was the first run of Pennzoil SL and the 2nd run of Pennzoil SM or were they both SM?

That may account for the Moly & Calcium changes between runs with the Pennzoil.


Darryl
 
I think this engine uses fairly soft bearings....

I'd try a 5w-40 synthetic and see how that does....I recommend the Shell Rotella T, 5w-40 at Walmart for $13.50/gallon. I'd test the second batch you run

If the significantly thicker oil reduces Pb/Cu/Sn levels, you've found your problem.
 
quote:
Originally posted by Drew99GT:
I can't wait till FuelTankerman chimes in
lol.gif

Click to expand...
grin.gif


Just another example of why a good dino will protect your engine as well or better than the synthetics will.

Pushing it to 4500 miles may be a bit much, but the wear metals look better than ever. Flashpoints are comparable with the syn as well. As far as TBN's go, I've seen terrible UOA's where the oil still showed a good TBN. Conversely, I've seen really good UOA's (low wear metals) where the TBN appeared to be shot.

If oil analysis is to be useful at all, it must be tied to wear metal count. Too many of us focus on TBN, silicone, viscosity retention, et al when the real tale is told by the wear metals. Those are interesting numbers, but certainly of secondary interest to the wear metals. No?

Does it matter if you have a 4.5 TBN after 10,000 miles if your copper and lead is through the roof?

Does it matter if the oil stayed well in grade if the iron has exceeded universal averages?

An engine fails when the metals wear to the point that a component or components no longer work correctly. And that's because metal has sheared off to the point that tolerances can no longer be "tolerated."
smile.gif


Some of us--as I've mentioned elsewhere--will jump through a dozen hoops to explain away why wear metals are high with our favorite motor oil (generally, these are fans of the syns). "It's cleaning." "This is a normal reaction of the oil's unique chemistry." Yeah. Sure. Whatever.

Here's an idea: Maybe that 6 to 8 buck a quart stuff really isn't protecting your engine as well as you thought. How 'bout them apples?
grin.gif


Dan
 
quote:
Originally posted by fuel tanker man:
Here's an idea: Maybe that 6 to 8 buck a quart stuff really isn't protecting your engine as well as you thought. How 'bout them apples?
grin.gif


Click to expand...
That is again why I feel ripped off paying more than, oh........ $1.99/quart for Redline
lol.gif
(or ANY oil).
 
Seriously, the Si seems to track pretty well with wear. Any info on air filter? How often do you change? Are you the type to examine them every oil change or sooner? Sorry just scanned up and saw you haven't fiddled with it in a few months. BUT...this change was 4months long, that would put it in this interval. And with high Si. Do you know how often I open my airbox? when I change filter, about every 2-5 years depending on car. I have a theory on high Si. People can't resist examining their filter. So the seal takes a compression set and doesn't seal as well. They start to get high Si. Think it's because filter is dirty. Put in new filter (WITH FRESH SEAL MATERIAL). Viola, lower Si. Hmm which was the real cause. I can guarantee you new filter media is not more efficient, unless it is severly degraded.
Ran a initial efficiency test recently with a filter used in housing that has a highly efficient centrifugal pre-cleaner. 1hr test. The filter element saw about 50g dust. Almost 8grams on absolute filter (downstrean of air cleaner, traps 100% dust). The same air cleaner on an over 100hr capacity test, has how mcuh dust do you think on the absolute filter? over 83,000 grams fed into inlet. About 8grams on absolute filter.
(I am not presenting this as extent of my knowlede to make these statements. Just a little tidbit to help some people understand.)
 
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