Hello all, new to the forum, so let me know if I'm messing something up.
Background: I imported a used Japanese market 1KZ-TE toyota turbodiesel engine to install into a 4runner. Approx 80k miles on the clock. I pulled a sample of the oil that came in the engine, and sent it to Polaris for a UOA, just to see what I was dealing with. i had no idea of the time on the oil, what type, etc. It came back looking like a good oil, however polaris flagged the potassium saying it could point to coolant in the oil. The relevant numbers were Si 22 - Na 54 - K 45, the silicon may have been high due to the very dirty air filter that came with the engine.
I filled with regular pennzoil 5w-30 and ran it for about 10 minutes idling just to flush the K out, then drained and let it sit for about a month letting gravity get everything it could out, and filled with Mobil1 5w-40 Turbo Diesel Truck.
I got the engine installed, and a sample was pulled at ~1500 miles. For the record, I had the valve cover off just before pulling this sample, and approx 1000 of those miles were using the mentioned dirty air filter, while I waited on a replacement to come from Japan. This may explain the Si of 26. I'm not yet worried about that number, as I plan to refill with TDT before a roadtrip coming up soon.
The latest results were as follows:
Iron 6
Chromium 0
Nickel 0
Aluminum 1
Copper 0
Lead 3
Tin 0
Cadmium 0
Silver 0
Titanium 0
Silicon 26
Sodium 1
Potassium 1
Moly 5
Antimony 0
Mang 0
Lithium 0
Boron 58
magnesium 532
Calcium 2501
Barium 0
Phos 1222
Zinc 1504
Fuel Soot Water Vis @ 100C 17.1cs (?)
TBN 10.9
K seems in line, though those 1500 miles were using a coolant pretty low on Antifreeze while I waited on my final cooling hose config to show up from Japan. it has since been brought up to spec (full bottle of a/f + DI water) so I'll keep an eye on that in the future.. but what worries me is the viscosity. Polaris flagged that as being too high, and I have to wonder, after only 1500 miles what would make Delvac thicken up like that?
Thanks for any thoughts or advice,
Justin
Background: I imported a used Japanese market 1KZ-TE toyota turbodiesel engine to install into a 4runner. Approx 80k miles on the clock. I pulled a sample of the oil that came in the engine, and sent it to Polaris for a UOA, just to see what I was dealing with. i had no idea of the time on the oil, what type, etc. It came back looking like a good oil, however polaris flagged the potassium saying it could point to coolant in the oil. The relevant numbers were Si 22 - Na 54 - K 45, the silicon may have been high due to the very dirty air filter that came with the engine.
I filled with regular pennzoil 5w-30 and ran it for about 10 minutes idling just to flush the K out, then drained and let it sit for about a month letting gravity get everything it could out, and filled with Mobil1 5w-40 Turbo Diesel Truck.
I got the engine installed, and a sample was pulled at ~1500 miles. For the record, I had the valve cover off just before pulling this sample, and approx 1000 of those miles were using the mentioned dirty air filter, while I waited on a replacement to come from Japan. This may explain the Si of 26. I'm not yet worried about that number, as I plan to refill with TDT before a roadtrip coming up soon.
The latest results were as follows:
Iron 6
Chromium 0
Nickel 0
Aluminum 1
Copper 0
Lead 3
Tin 0
Cadmium 0
Silver 0
Titanium 0
Silicon 26
Sodium 1
Potassium 1
Moly 5
Antimony 0
Mang 0
Lithium 0
Boron 58
magnesium 532
Calcium 2501
Barium 0
Phos 1222
Zinc 1504
Fuel Soot Water Vis @ 100C 17.1cs (?)
TBN 10.9
K seems in line, though those 1500 miles were using a coolant pretty low on Antifreeze while I waited on my final cooling hose config to show up from Japan. it has since been brought up to spec (full bottle of a/f + DI water) so I'll keep an eye on that in the future.. but what worries me is the viscosity. Polaris flagged that as being too high, and I have to wonder, after only 1500 miles what would make Delvac thicken up like that?
Thanks for any thoughts or advice,
Justin