99 Toyota Sienna V6, Mobil1 5w30, 3300miles

[ToyotaNSaturn]

My First UOA

...1999 Toyota Sienna 3.0L V6 using Mobil1 5w30 for 3,303 miles driven about 80% highway / 20% city, no makeup oil added. The air filter is about 25000 miles old and changed it the same time I took this sample and changed to a fresh batch of M1. Total miles on engine is 46,560. Blackstone labs had the email back to me in 6 days. Very fast! Thanks guys! I'm just waiting for Terry's words of wisdom

.

This is my second run with M1, the previous using 10w30. Previous to M1, I used several Chevron Supreme OC's with Neutra to get any junk out of the motor. I hope this set the stage for good things to come.

What struck me was the flash point was so low. For this sludge-prone engine, wouldn't it be better to have it up in the 400's?

 

[Patman]

Definitely a nice report! (in terms of wear numbers anyhow) Iron is a bit higher than slider's 5w30 Redline report we saw here on (the same vehicle and engine as yours), but we've been noticing M1's higher iron trend for a little while now. It's only very slightly high, and nothing to worry about by any means though. The rest of the numbers are awesome!!

Note the slightly thicker viscosity too, this must be some of the latest batch from Mobil 1.

[ October 28, 2003, 01:36 PM: Message edited by: Patman ]

 

[TooSlick]

The key piece of data in this report is that the TBN dropped like a stone after 3300 miles. The Toyota V-6 suffers from very rapid nitration, due to the high cylinder head temps and lean burn design. Nitration is the precurser to the formation of organic acids, which rapidly deplete the detergent additives.

In terms of oil degradation, it's worse than any turbocharged engine I've ever tested ....

 

[Pablo]

The wear is fine, but the oil is holding it's own, I agree. 3300 miles isn't many...maybe some cleaning is STILL happening....or it's the hot Toyota motor...

 

[Al]

Well it doesn't appear that the high silicon hurt anything. It may still be sealant. I'm surprised the TBN dropped this much in this amount of miles. I'll be interested in seeing what the next sample looks like-especially with the silicon

 

[MolaKule]

"What struck me was the flash point was so low. For this sludge-prone engine, wouldn't it be better to have it up in the 400's?"

You're only about 15 F below where is it should be and fuel dilation will lower that.

 

[ToyotaNSaturn]

I changed the air filter (trying STP brand) so hopefully the silicon drops a bit at the next OCI. Also, I forgot to mention that I used the Toyota OEM oil filter during this run. I didn't have any OEM filters on hand so I'm using a SuperTech one currently. Luckily, I have a few on hand for my Saturn, and these are the exact same ones it calls for on the Toyota. (What's the odds on that happening?!) We'll see how this all shake out...