Sorry, I hit send by mistake before I had finished.
1999 Ford Escort SE Wagon (2.0L 4 cyl)
Miles on vehicle: 45295
Miles on oil: 5105
Oil: Amsoil 5W-30 (ASL)
Oil consumed: approx. 3 oz.
No makeup oil added
50% city ; 50% highway (avg speed approx 70-80 mph, max speed 100 mph (for a short time)
sample/'universal averages'
Aluminum 3/3
Chromium 1/1
Iron 7/23
Copper 4/7
Lead 7/3
Tin 0/2
Molybdenum 3/26
Nickel 1/1
Manganese 1/0
Silver 0/0
Titanium 0/0
Potassium 1/0
Boron 14/50
Silicon 12/36
Sodium 5/63
Calcium 2541/1459
Magnesium 460/621
Phosphorus 1045/788
Zinc 1398/948
Barium 0/2
SUS @ 210F 67.6
Flashpoint 435.0F
Fuel < .5%
Antifreeze 0.0%
Water < 0.05%
Insolubles 0.3%
TBN 11.5
Comments by Blackstone:
The universal averages column shows what wear typically looks like in the Ford 2.0L 4 cyl. engine after 4100 miles on the oil. Your oil was in use a little longer than that, 5100 miles, and we found most wear to be quite low. Lead, however, read about twice average, showing mild bearing wear. It's not bad enough to call a problem, but you might want to go 3500 4000 miles for the next oil change to see if lead drops. The TBN read 11.5, quite high, so the oil is up to the task of the longer oil runs. We just need to ensure your bearings can handle it too.
My comments:
This is my wifes car. She isn't the best with the manual transmission, so there might have been some lugging possibly causing the lead being a little high. Also, I accidently hit the accelerator on a cold startup once and the revs got quite high before the oil pressure stabilized. Maybe about 4500-5000 rpm. Grrr! So, I think the lead might not be representative.
Overall, I'm pretty happy with this and it seems worthwhile extending much longer, assuming the lead is not thought to be a problem.
Comments welcomed.