Pennz Plat 10W30, 7,166 miles, 4.7L V8 Toyota Seq

chinee · May 29, 2007

Snooze warning everyone... these UOAs are nothing to write home about. It was so boring I forgot to post it.

There are just two things that really caught my eye:

1. The iron significantly lower (relatively of course) than previous UOAs. Is the Pennzoil performing better than the M1?

2. The viscousity is low at 57.6. I think this means the oil has thinned somewhat, but I'm looking for a more meaningful explanation of low viscousity. What does this mean for the oil and its performance, is there less protection for the engine parts, and how so?

Feedback is always welcome. Thanks in advance. Also posting my G35 UOA as well.

tripleM · May 29, 2007

GEESH. pp JUST KEEPS ON ROCKING.

Brett Miller · May 29, 2007

That looks like new oil!

Patman · May 30, 2007

Quote:

I think this means the oil has thinned somewhat, but I'm looking for a more meaningful explanation of low viscousity. What does this mean for the oil and its performance, is there less protection for the engine parts, and how so?

I would not worry about that at all in the case of this engine, as it clearly isn't hurting your wear numbers at all!

As much as I am impressed with PP's performance lately, credit in this case goes to Toyota, for building one of the lowest wearing engines ever.

ARB1977 · May 30, 2007

Wow nice numbers

ARB1977 · May 30, 2007

I plan on doing an auto rx treatment with castrol gtx. If i notice some change in fuel milage or performance i plan on doing maintence doses and syntec. Im courious how well would it work with PP.

unDummy · May 30, 2007

Typical boring 4.7L UOA. Spice it up by throwing a handfull of sand into the engine, by running a few quarts low, or performing a bunch of neutral drops.

Looks excellent. Oil is still a 30wt. Nothing to worry about. There is a UOA of the 4.7 with 20wt that looks excellent too. So, if fluid actually sheared more, it wouldn't hurt the engine.

Oh wait, just notice the massive oil consumption

Warlord · May 30, 2007

Yeah whats with all that consumption? Also, why did blackstone tell you the TBN twice?

Looking good.

ToyotaNSaturn · May 30, 2007

I don't understand the statement of "it looks more like a 5w-30 rather than a 10w-30". Did they test it at 40C and not share the info with you? Otherwise, how would they know if it's a 5w or 10w?

Cutehumor · May 30, 2007

Quote:

Yeah whats with all that consumption? Also, why did blackstone tell you the TBN twice?

Looking good.

cut and paste job

Titan · May 30, 2007

Quote:

I don't understand the statement of "it looks more like a 5w-30 rather than a 10w-30". Did they test it at 40C and not share the info with you? Otherwise, how would they know if it's a 5w or 10w?

Same thought I had. They'd have to check it at a low temperature. I keep seeing many examples of recommendations from Oil Analysis companies which make me wonder if a well-trained tribologist is reviewing the report. Look, it's common knowledge that, for example, GC 0-30 is thicker than most 5-30's or 10-30's at most points along the temperature range, except at the extreme lower temperatures. Isn't it also common knowledge that many 5-30's are thicker than many 10-30's except at the lower temperatures? And this analyst makes that non-sense statement...that's a jippy-lube quality recommendation in my book...

ryansride2017 · May 31, 2007

I realize 1 quart of make-up in 7K miles on a vehicle with 111k miles isn't bad, but it would bum me out a little. Especially since the vehicle appears to have had synthetic oil for a good bit of it's lifetime. Has it always burned this much or is it quickly increasing due to mileage? I couldn't brag about this engine (I know many 4.7 liter engines have produced stellar UOA's) due to the oil consumption....just a pet-peeve of mine.

chinee · May 31, 2007

Quote:

I realize 1 quart of make-up in 7K miles on a vehicle with 111k miles isn't bad, but it would bum me out a little. Especially since the vehicle appears to have had synthetic oil for a good bit of it's lifetime. Has it always burned this much or is it quickly increasing due to mileage? I couldn't brag about this engine (I know many 4.7 liter engines have produced stellar UOA's) due to the oil consumption....just a pet-peeve of mine.

Now I remember...

The make up oil was added because a tech at Goodyear who was supposed to change the tranny fluid, drained oil instead for about 20-30 seconds. I added about a qt to top it off; this occurred at about 2K into the interval. So since the oil was "refreshed," this UOA is not as comparable as the others... the wear numbers may be a little low, but not by much.

Warlord · May 31, 2007

They did that and didn't add oil for free? I wouldn't be going back there if I were you.

chinee · Jun 1, 2007

They were going to add a quart of Kendall synthetic; I preferred to top off with the same brand I was already using. I'm a regular there, they do pretty good work and typically treat me quite well, so I didn't make too much of a fuss. Hey... no one's perfect....

JohnBrowning · Jun 1, 2007

Maybe next time you can run some Walmart Brand 30HD for 3000 miles so we can see what happens as that has to be about the cheapest combination of base stock and additive chemistry that is safe for the engines mechanical parts. I am going to guess it is GI and some GII and rely's on ZDDP,Calcium and Magnisium. If the old beast still has great UOA number we will know for sure it does not matter what you put in these things!

Jim 5 · Jun 2, 2007

I agree with JB, these Toyota's don't in any way challenge an oil, the engines just wear so little.

If I owned one of these beautiful babies, I'd be running any decent quality dino oil in the recommended grade out to a 6-8k OCI and sleep well knowing my UOA's would be fantastic.

Gary Allan · Jun 2, 2007

Quote:

2. The viscousity is low at 57.6. I think this means the oil has thinned somewhat, but I'm looking for a more meaningful explanation of low viscousity. What does this mean for the oil and its performance, is there less protection for the engine parts, and how so?

Your viscosity is still a 30 weight (9.6 CST). The "should be" is just a composite range of all viscosities in the past UOAs for this engine. If everyone had used a 40 weight oil, you would have thought that your visc was in the trash can. Obviously it's not quite an "average" ..but statistically the numbers of those below or above are not significant.

chinee · Jun 2, 2007

Quote:

Quote:

2. The viscousity is low at 57.6. I think this means the oil has thinned somewhat, but I'm looking for a more meaningful explanation of low viscousity. What does this mean for the oil and its performance, is there less protection for the engine parts, and how so?

Click to expand...

Thanks... I appreciate the explanation.

Your viscosity is still a 30 weight (9.6 CST). The "should be" is just a composite range of all viscosities in the past UOAs for this engine. If everyone had used a 40 weight oil, you would have thought that your visc was in the trash can. Obviously it's not quite an "average" ..but statistically the numbers of those below or above are not significant.

Steve S · Jun 2, 2007

Quote:

I realize 1 quart of make-up in 7K miles on a vehicle with 111k miles isn't bad, but it would bum me out a little. Especially since the vehicle appears to have had synthetic oil for a good bit of it's lifetime. Has it always burned this much or is it quickly increasing due to mileage? I couldn't brag about this engine (I know many 4.7 liter engines have produced stellar UOA's) due to the oil consumption....just a pet-peeve of mine.

What does using synthetic oil have to do with anything? All engines use oil some almost none ,some too much.

Pennz Plat 10W30, 7,166 miles, 4.7L V8 Toyota Seq

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