3 oil changes in first 10,000 miles. Oil Analysis lab results attached.

[izzy]

That's what I told him, but he said they bench run it for the equivalent of a break-in period, then change the oil that they deliver the truck with

Someone also drove it around the factory, to a truck, onto the truck, off the truck then to the dealer.. and maybe to another regional dealer nearby (which is why some new vehicles have 10-15mi)... it's still new lol

The first sample came with the Tacoma new but the next two I changed were Mobil 1 0W-20 Advanced Fuel Economy.

Interesting, Toyota 0w has a lot of molybdenum, more than Mobile 1 clearly. Good stuff overall for an engine, it's better than most off the shelf oils.

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[gpburdell]

@gpburdell It's my first new vehicle and I don't intend to sell as long as it suits my lifestyle. At my rate it will be 25 years before I hit 200k.

Yeah, that's the challenge - not always sure how needs might change in the future. Bought my '17 new in late 2016 and have 107k miles on it so far.

Got rear ended in April this year and started looking at 4th gens - but it ended up repaired vs totaled and I've just not pulled the trigger on a new truck. Love the new powertrain and some other stuff, but not thrilled with the some stuff, so I just keep on with my 3rd gen.

 

[hemlockz]

Interesting, Toyota 0w has a lot of molybdenum, more than Mobile 1 clearly. Good stuff overall for an engine, it's better than most off the shelf oils.

Perhaps the high levels in the first sample are coming from moly assembly lube not necessarily the oil additive pack

 

[izzy]

Perhaps the high levels in the first sample are coming from moly assembly lube not necessarily the oil additive pack

Seems like Mobile 1 uses a different type of Moly that is more effective in lower concentrations.

https://pqia.org/mobil-1-advanced-fuel-economy-0w-20-advanced-full-synthetic-motor-oil/

Where as Toyota TGMO is using the older style which requires higher concentrations to be effective, 700-900ppm as seen on analysis.

Ultimately, on a 3k mile interval, it really doesn't matter to be honest, I'd say even on a 5k oci it also probably doesn't really matter. Maybe 10k+ sure, then you should be looking at Redline/Amsoil etc, not sure I'd recommend that long of an interval anyways on a T24A-FTS.

 

[TimC.]

Outstanding and intelligent. Many guys on here say they have had many vehicles and logged thousands of miles with no issues. I don't hear any saying how much oil is consumed between changes though. Excellent job here. This is the difference between an engine sealed "rings" and one that's not.

 

[TimC.]

The oil to use is Driven DI20 do you're research. Two things, sheer stability (is the oil still in grade) wear rate additive package.

 

[izzy]

The oil to use is Driven DI20 do you're research. Two things, sheer stability (is the oil still in grade) wear rate additive package.

I mean yeah, but we also have port injection, I don't think there's anything wrong with DI specific oil but if it costs significantly more than a high quality synthetic and you're going to change in 5,000 miles... it might not be worth it.

The port injectors deal with intake valve deposits as long as you're using a high quality 91+ Top Tier fuel (which is probably more important than the oil you chose as long as your OCI is less than 5000 miles.

 

[BLtheP]

The oil to use is Driven DI20 do you're research. Two things, sheer stability (is the oil still in grade) wear rate additive package.

Dang, nearly $20 a quart.

 

[TimC.]

Data drives all my decisions and not tribal knowledge or what someone says to do. Not to be ugly but 65k truck will be in my inventory for 300K miles or more. There is a reason why it's $20 .

 

[WKTJR1]

Outstanding and intelligent. Many guys on here say they have had many vehicles and logged thousands of miles with no issues. I don't hear any saying how much oil is consumed between changes though. Excellent job here. This is the difference between an engine sealed "rings" and one that's not.

I'm one of those guys. Some due to evaporation and age depending on the vehicle. Overall, nothing that was ever concerning.

 

[TimC.]

Wow? Evaporation?

 

[32spoke]

What brand of oil did you use for these changes? I ask because of the Moly numbers. From what I’ve seen on new oil tests the OEM Toyota is formulated with higher Moly vs most all other oils including Mobil 1 which everyone thinks is the OEM oil (but it really isn’t)

Napa auto parts synthetic is high in moly.. made by Ashland oil/valvoline

 

[izzy]

Data drives all my decisions and not tribal knowledge or what someone says to do. Not to be ugly but 65k truck will be in my inventory for 300K miles or more. There is a reason why it's $20 .

That's how I felt when the dealer parts counter lady interrogated for buying 75w-85 GL5 for the diffs at 15,000 miles, so I get it

Things gotta last forever, so yeah I'm doing the severe schedule.

 

[Wolf359]

So I asked the dealer about the whole break-in period debate. I was told that they do a break-in period in the factory and that the truck gets delivered with it's first oil change already under its belt

I haven’t worked directly with the manufacturing plants that builds our trucks, but I have been in many OEM engine and assembly plants over the years, including the Japanese brands, and they are more a like than different in their production processes. Automotive manufacturing is no different than any other manufacturing in that time is money, they aren’t going to do any break in of the engines at the plants that would take time and cost.

From my experience, the average number of engines that are hot tested is around 10%, and that is the smaller 3 and 4 bangers, V6 is usually less. The only time every engine gets hot tested is if there is a known issue so then those test become a vital tool.

But hot tested engines do indeed get new oil after the rather vigorous testing before the engines get shipped from the engine plant to the vehicle assembly plant and put in the production mix. So to be fair, maybe the person that told you that had just enough knowledge to be 90% incorrect. A hot test isn’t a break in, and only engines that are hot tested get fresh oil.

In most cases, the first time a vehicle has ever been fired up is at the end of the line function checks. After that, most times the vehicle is sent to a yard until shipped.

 

[saerandy]

Seems like Mobile 1 uses a different type of Moly that is more effective in lower concentrations.

Where as Toyota TGMO is using the older style which requires higher concentrations to be effective, 700-900ppm as seen on analysis.

That is what I find interesting. We know that TGMO is manufactured by Mobil however Toyota specifies a different formulation including the Moly type. I'm sure if they wanted to specify what is in the Mobil 1 they would/could get that but they don't. Their other additives +/or ratios are also different which leads me to believe they've formulated it to be very specific to Toyota engines. Maybe the composition of the aluminum and steel in the engines? Who knows? I have read that TGMO has a much higher viscosity index so it stays thicker at higher temps while being thinner at lower temps than other 0W20 synthetics. As someone pointed out, with 3000-5000 mi changes this probably does not make too much of a difference but with the low parts counter price of TGMO I think that I'm going to stick with that. I'll update here and we can all compare ~200,000 miles from now!

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