I actually have three reports from my Dad's 2003 Toyota Tundra with the V8. He bought the truck this past fall used from a dealer under the whole Certfied Used package, so at 3127 miles I sampled the oil they put in, installed M1 EP 5W-30 and sampled it at 3223 and 6328 miles. The first sample was while using a Toyota OE filter, the second two were while using a very small supertech filter. I have since upgraded the truck to a Motorcraft FL-1A which is gigantic.
Toyota Tundra V8 Mobil 1 EP 5W-30 6328 miles
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We should all have uoa that look this good. Excellent oil in an excellent engine = GREAT
Keep running that oil. High TBN and "no" fuel, water, or coolant detected.
Note the somewhat high Si levels on the previous samples. Did you change the air filter during this latest run? How much top-up oil did you have to add at when you changed out the filter?
jeff
Note the somewhat high Si levels on the previous samples. Did you change the air filter during this latest run? How much top-up oil did you have to add at when you changed out the filter?
jeff
Another 2UZ up to its usual antics -- using oil to lubricate itself, but leaving behind hardly any evidence. . . The only thing I'd add is that you don't need to bother with the super oversize Motorcraft. I've done particle counts on the oil in our 2UZ (powering my wife's Sequoia), and it's evident from those that this engine stresses neither its oil nor its filter. I still use the "tall" M1-209, but simply because I have a bunch of them around. If you cut that filter open at the end of your OCI you'll see what I mean -- nothing, or next to nothing. As gjp noted, the Si looks a tad high, but still, don't worry. In my last UOA, after 13 months and 10k miles, I had slightly higher Si, but even lower wear numbers. Hey, what's up with that Tin? That does seem a tad out of place.
Silicon jumbed up as well. Intake dirt? Is the air filter being messed with? not bad numbers but look at the trend, something is getting in.
TR3 - Thanks!
green/ekpolk - He hasn't changed the air filter, it is probably a Toyota OE part that the dealer put in when certifying the truck. The oil in the first run is whatever the dealer put in, so I have no idea what it is, or even how long it was in there. The silicon is a bit high, but it could be a additive. Tin is crazy! But gone now. At the first change I put on the supertech filter, and so the second and third samplings were both with that filter. The motorcraft is on there now, but I haven't sampled with it. I like the fact that it holds almost a quart of oil!
Bryan - I think you're reading them backwards man, the Si trend is down.
green/ekpolk - He hasn't changed the air filter, it is probably a Toyota OE part that the dealer put in when certifying the truck. The oil in the first run is whatever the dealer put in, so I have no idea what it is, or even how long it was in there. The silicon is a bit high, but it could be a additive. Tin is crazy! But gone now. At the first change I put on the supertech filter, and so the second and third samplings were both with that filter. The motorcraft is on there now, but I haven't sampled with it. I like the fact that it holds almost a quart of oil!
Bryan - I think you're reading them backwards man, the Si trend is down.
Not to quibble on the filter, but I'd pick for this engine based upon performance, not size. The 2UZ already holds about seven quarts (depending upon particular installation) and shows no signs of oil stress even over long OCI. I doubt that adding a tad more will do much for you. OTOH, I've ordered particle counts while using Mobil-1 filters (and K&N on my G35), and posted results. If you feel like it, order PCs on your next UOA with the Motorcraft and see how it comes out.
Whoops I sure did.. it looks good then!
One thing I forgot to add. If you think the Toyota filters look small, you should check out the filters that Nissan is specing these days. The standard size for my G35 is so small, you could easily fit two of them into a 12 oz Coke can, with some room to spare. I use a taller version (guess I sound like a hypocrite now...), which is still miniscule compared to the std filter for the 2UZ, and my PCs on that engine are beautiful.
So the second 3K the engine ran cleaner than the first. Even though you never changed the ST filter is that right. With the silicon falling and Iron too tells me M1 EP ran better as the miles went on.I may have to revise my thinking on GC compared to M1. My Toyota had more wear at 5K than 3K and I changed the filter at 6 Mo..The ST filter held up very well another point that stands out.Great report.
I have the 2005 version of the Tundra V-8. The filters do look small. The Toyota dealer filter is not the same as the original Japanese-made Denso. That one is unusual in costruction and I'll post pictures soon.
Mobil EP is really overkill since it holds almost seven quarts and, in order to keep the warranty in force, the OCI is six months or 5000 miles.
I probably wont be doing UOA's until near the end of the five year/50,000 mile powertrain warranty, or if I suspect a coolant leak, etc.
Mobil EP is really overkill since it holds almost seven quarts and, in order to keep the warranty in force, the OCI is six months or 5000 miles.
I probably wont be doing UOA's until near the end of the five year/50,000 mile powertrain warranty, or if I suspect a coolant leak, etc.
Jimbo:
I agree that M1EP is probably overkill for this engine, but not for the same reason. IMO, it's just because this eninge is so easy on oil in the first place.
The warranty will remain "in force" regardless of whether the oil is used past the recommended interval. While caution is certainly prudent, "voiding" of warranties in this manner is a myth. Under the federal laws which govern new car wtys (the Moss-Magnuson Wty Act), the mfr must prove that the owner (or some other party) caused the problem at issue before they can deny a claim. Merely exceeding the recommended OCI does not establish the required causal link. That said, the owner who decides to go longer would be well advised to have UOA to show that the oil remained good (and thus not a cause of any problems). And even if the mfr proved that neglected oil caused an engine problem, thereby getting off the hook for that problem, the wty is still in full force as to any other defect (so even if you have a sludgy engine, a trans failure from a bad part would still be covered). Finally, none of this applies to the extended warranties which are so aggressively marketed these days -- the MMWA applies only to new car wtys.
Surely, it's better to be careful and stick to recommendations during the wty, if only to avoid the big fight. On the other hand, one need not worry about "voiding" his wty if he accidentally runs a few k over the recommended OCI. In truth, it's a non-issue the mfrs and dealers like to scare customers with.
I agree that M1EP is probably overkill for this engine, but not for the same reason. IMO, it's just because this eninge is so easy on oil in the first place.
The warranty will remain "in force" regardless of whether the oil is used past the recommended interval. While caution is certainly prudent, "voiding" of warranties in this manner is a myth. Under the federal laws which govern new car wtys (the Moss-Magnuson Wty Act), the mfr must prove that the owner (or some other party) caused the problem at issue before they can deny a claim. Merely exceeding the recommended OCI does not establish the required causal link. That said, the owner who decides to go longer would be well advised to have UOA to show that the oil remained good (and thus not a cause of any problems). And even if the mfr proved that neglected oil caused an engine problem, thereby getting off the hook for that problem, the wty is still in full force as to any other defect (so even if you have a sludgy engine, a trans failure from a bad part would still be covered). Finally, none of this applies to the extended warranties which are so aggressively marketed these days -- the MMWA applies only to new car wtys.
Surely, it's better to be careful and stick to recommendations during the wty, if only to avoid the big fight. On the other hand, one need not worry about "voiding" his wty if he accidentally runs a few k over the recommended OCI. In truth, it's a non-issue the mfrs and dealers like to scare customers with.
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