Blackstone Oil Report Repository - Share Your 2UZ Reports (2 Viewers)

[GTV]

My latest report. Last time I was told I could go further on my oil, 7-8k (can’t remember exactly). Well, I was on the road so I over shot that by a little/lot. 301A is the massive Mobile filter I’m using.

Since the computer can’t be customized for oil change frequency I’ve decided to change the oil every 5k and change the oil and 301A filter every 10k. Removing the front Dissent skid to access the filter is a PITA anyway (I really wish Dissent had designed access for it!).

 

[GTV]

Also had my Tundra analyzed. Going to do the same 5k/10k schedule.

 

[suprarx7nut]

Also had my Tundra analyzed. Going to do the same 5k/10k schedule.

View attachment 3809775

That's my go-to these days. 5k filter change, 10k oil change. Or more realistically, just once per year now that the 100 isn't on daily duty.

Cool to see reports still coming in on this thread. And great to see the common trend is 5-10k change intervals.

 

[Live to Ski]

Riddle me this batmudders: what is the relationship silicone vs dirt?

 

[suprarx7nut]

Riddle me this batmudders: what is the relationship silicone vs dirt?

I think you mean silica.

Silica is sand. Dirt often has some sand. Sand is real bad for your motor. Sand hard. Sand abrasive. Sand make engine dead. Sand no good. Air filter meant to filter out silica. Silica in oil is a sign of sand in your engine. No good.

Sili*cone* is what's used to make rubbery kitchen utensils, adhesives, and uh... fun bags.

 

[Live to Ski]

suprarx: report says silicone....but I have to imagine you are correct in that it is a typo. I think that needs to be clarified by the lab as it appears 2x as silicone (once in the lab synopsis, once in the details).

 

[Mike NXP]

suprarx: report says silicone....but I have to imagine you are correct in that it is a typo. I think that needs to be clarified by the lab as it appears 2x as silicone (once in the lab synopsis, once in the details).

Same same ,

Silicon is what the report shows ( no E ) is a natural element . Google says , silicon is rarely formed in nature however when it bonds with oxygen it forms Silica,a major component in sand

Silicone is a man made product not relevant to the report

 

[Live to Ski]

mike: great catch and thanks for the explanations.

 

[Mike NXP]

mike: great catch and thanks for the explanations.

Thanks for inspiring me to Google it and learn something because I had no clue either lol

I've recently acquired a 40 year old toyota diesel Camry , I should send the oil off and see what Blackstone finds..hmmm

 

[rexington14]

Everyone has their own opinions here but if I was going to try split intervals of 5k/10k I'd be changing the filter every 5k, then changing the oil & filter every 10k.

 

[darrenk]

About a year (and 4 oil changes) since my last report. I tried to keep the mileage the same as my first sample as I try to keep the changes around 7000 k.
The main thing I watch for is coolant levels ever since I watched the Car Care Nut's video on the 2UZ with a head gasket failure that was not caused by an overheating issue.

 

[2001LC]

Care Care Nut video on 2UZ with coolant found in oil report. Failed head gasket assumption, was inconclusive IMHO.

I do think as the year pass, especially 25 year old (past design life). Oil analysis, can be a useful tool.

CCN, pressurized coolant system, of presumably room temperature engine. Then inspect cylinders for leaks at head gasket. He did not see even one drop. He did not state if coolant system pressure test failed. So how can he point at head gasket as leak. I suppose it possible leak from heads gasket coolant passage was directly into oil passage. But he saw (didn't mention) no evidence between passages.

Seeing rubber coating come off head gasket, when head removed. Doesn't mean a they leaked.

He stated: "Owner really takes care of, it's pristine". I can't call this a properly maintained 100 series.
I only had a small glimpse under the hood, in video. Where I saw, brake master reservoir overfilled and stained with dark fluid. This is due to improper service! So I certainly would not take for granted, engine not running hot.

One other thing I'd like to have seen and see now. Is logs on Engine Coolant Temp (ECT) data from tech stream. As I see so many, that say my ECT is never high. They're looking a dash water temp gauge, making that statement. When I run logs via tech stream data of actually ECT. I find 7 out of 10 running hot, getting above 200F often. In every case, it boils down to improper PM. Number one, radiator fins not being rinsed.

I'd really like to hear from CCN, on follow-up of this engine. It's been over a year. be great to see a post HG R&R oil report.

 

[rexington14]

Oil analysis is a good idea but I am not 100% convinced it will always detect very small head gasket leaks where only small amounts of coolant are entering the combustion chamber. It's very possible that any evidence of this occurring gets burned up and sent out the exhaust and doesn't make it into the oil in detectable amounts.

For larger head gasket leaks where the coolant is able to seep past the rings into the oil then that is very likely to be detected.

All that said I am not really sure of the best way to detect and confirm small head gasket leaks that don't present with any noticeable symptoms. If / when it becomes a problem though it will surely declare itself.

 

[davidp14]

OVerall happy with the report. I'll probably just do this once or twice a year unless I'm concerned about something.

 

[NoTempoLimit]

Great idea @suprarx7nut ! Here is my contribution. This sample is at 130k, I'm now nearly at 185k so a re-test is in order. Oil was 5 quarts Quaker State (Shell) Ultimate Durability 0W-20, plus 1.5 Qt Castrol Edge 5W-50. That's why Blackstone thought the viscosity was a little high. Of the 6720 miles on this sample, about 3000 of them were a one-way trip from Los Angeles to Portland Maine. That might explain why the oil was is such good shape at almost 7k miles.

 

[suprarx7nut]

Oil analysis is a good idea but I am not 100% convinced it will always detect very small head gasket leaks where only small amounts of coolant are entering the combustion chamber. It's very possible that any evidence of this occurring gets burned up and sent out the exhaust and doesn't make it into the oil in detectable amounts.

For larger head gasket leaks where the coolant is able to seep past the rings into the oil then that is very likely to be detected.

All that said I am not really sure of the best way to detect and confirm small head gasket leaks that don't present with any noticeable symptoms. If / when it becomes a problem though it will surely declare itself.

I don't see oil analysis as a 100% complete engine health safety net. Just a data-driven measure that's a piece of cake to collect and can reveal a lot you can't estimate otherwise.

 

[x8o8drifter]

I don't see oil analysis as a 100% complete engine health safety net. Just a data-driven measure that's a piece of cake to collect and can reveal a lot you can't estimate otherwise.

Yep, I have always used it as another data point for how the engine is doing.
Good on a used car you just bought to see if the engine is fine. (Soon on my new to me LX470)
Even better to keep tabs on your car between oil changes. (Assuming you do one every year or more)
Friend spun a bearing in his SR20 years ago and thankfully we caught the large increase in coper and other metals that crank bearings are usually made out of.
Took it apart and he had spun #3.
Thankfully we spotted the damage in the report BEFORE it got to the point of us hearing it.

 

[Foehammer]

Thanks for inspiring me to Google it and learn something because I had no clue either lol

I've recently acquired a 40 year old toyota diesel Camry , I should send the oil off and see what Blackstone finds..hmmm

Wait wait, Toyota made a Camry with an oil burner in it?