Engine: This Black Label version of the Navigator has a 3.5L, 450-hp twin-turbo V-6 pushing an over 3 ton barn door through the wind. It has 9k towing capacity and specs a 5W30 motor oil. It is mated to a 10-speed automatic transmission. The package gets you to 60 MPH in 5.4 seconds. Correct me if am wrong - I think the twin turbos are of different sizes to minimize turbo lag, a small turbo and a large turbo to better cover the RPM range more efficiently.
The car had around 28,000 miles when the 5 grade oil was put into it, 29,000 when I took out the oil. The oil filter was changed with every oil change. I put in a new air filter at about the 25,000 mile mark. The journey for the 5 grade oil was around 50% highway milage on I-75 in Florida, posted speed limit 70 MPH though I usually go with the flow, that may be, at times, a little faster. The remainder was around town, pretty routine. Both highway and city driving had an easy 1 MPG fuel economy benefit. Often the back of the truck is full of stuff, heaviest load was on the highway trips. I never towed anything.
Tested Motor Oil:
Red Line 5WT Racing Oil 0W5 grade (their label, not mine)
Phosphorus, Avg PPM 3350
Zinc, Avg PPM 2400
Vis @ 100°C, CSt 4.6
Vis @ 40°C, CSt 21.8
Viscosity Index 134
CCS Viscosity, Poise, @ °C [email protected]
Pour Point, °C -54
Pour Point, °F -65
NOACK Evaporation Loss,1hr @ 482°F (250°C), % 12
HTHS = 1.58
So why the preamble? Several things. I am sending oil samples to Blackstone and two other higher end labs that should prove interesting. I will include a virgin oil analysis of the Red Line 5WT Racing Oil. I believe this comparison will be revealing. I collected a quart of fluid or more, mid-stream when I dropped the oil.
What to expect:
Well here is some of the results now. I have cut open the oil filter as I sometimes do. How about a blot test?
The Motorcraft oil filter paper did show some visible particles also seen under magnification.
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The filter paper blot test was for 2 hours on the left and 1 hour on the right. The sample on the right was drawn just after shaking the container to make sure there were no settled particles nor separated solutions.
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What are your thoughts (other than I am crazy) ?