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Doug Burgum, Secretary of the Interior, just announced the rollback of CAFE standards, in an interview with Fox’s Bret Baier. This is one of the ways they are helping the economy they say. Ali

Over the years it has been my observation that oil changes (of the same exact type) result in less MPG early on. Then as the oil milage increases, the MPG gets back up to normal for each car. Then it stabilizes for the remainder of the oil run. Have you noticed the same? Sure, fuel dilution can...

New truck. I sampled the oil at 2,000 original miles and changed the GM air and oil filters to Wix XP then drove another 2,000 miles. I resampled the oil for a second UOA. No oil change as yet. No added oil. It is about half a quart low on the oil stick. It looks fairly clean. Do I continue or...

I have a bunch of Robinair vacuum pump oil. Can I use it in my dual high pressure air compressor that runs up to 150 PSI. Thanks, ali

People stated the Renewable Lubricants oil had less wear because the previous test was still in the break-in period. So the next oil I ran was the original OEM oil again. It still looks better with the thinner RLI motor oil. It has no certifications. I ran the RLI oil harder as it was not as...

This is 90 percent in town driving, 10 percent highway. Vehicle: 2019 Lincoln Navigator L Black Label Engine: 3.5L Ecoboost High Output 450 HP End of experiments for this truck. I will stick with the 0W-20 for now as I have a stash. I think it might be good to change the air filter at this...

This is a different test. When the oil was changed from the Red Line 0W-5 oil (RL’s label, not mine) there were elevated wear numbers (not shown is a UOA of the 20 grade PZ from the 1,600mi mid-sample so as not to confuse the purpose here). Were the elevated numbers real or partly left over from...

I previously ran the OEM provided 5W-40 Pakelo oil then changed to Renewable Lubricants Inc. (RLI) 0W-30. As always, going thinner. But again, my track days are over. Ferrari recommends only the one oil for all usages. Interesting that the previous front engine 6.0L V12 spec’ed the Shell 10W-60...

FYI: How long can a used oil analysis sample sit on the shelf before you have to send it in for an analysis? How will shelf life effect the results? You found an old sample you really wanted to examine but forgot. Is it still good? I obtained an engine oil sample, divided it into two samples...

So often the car that is dying early is written off because of a lack of proper oil changes. What happens? There is evidence that there is LESS wear with extened oil changes. Certainly the oil oxidatively thickens increasing the MOFT. So wear should go down. The longer you run, the thicker the...

The run of this 5W grade oil was 1,059 miles from about 28,000 to 29,000 miles on the truck. According to Red Line the HTHS = 1.58. The J300 has a minimum kinematic viscosity requirement but no HTHS requirement for this grade. The HTHS for an 8 grade oil is 1.7. Half high speed highway and half...

1987-11-01 Relationship of Engine Bearing Wear and Oil Rheology 872128 Member OVERKILL referred to this SAE paper, another Taxi test. It is from a 1987 published paper but I felt it was worth reviewing: One premise they stated was: ...it is not clear that thicker oil films will lead to less...

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...

So I have been looking for this. I did not find it in the “Taxi Study” often referred to. However, there was a paper from the 1990’s that may shed some light - Properties of Engine Bearings Lubricated with Low HTHS Viscosity Oil, 980702, Ono et al...

I know of only this study using taxis as the main experiment. I am going to review it here. Las Vegas taxi service was considered one of the most demanding environments for an engine lubricant in North America by OEM’s. Evaluation of SAE 0W20 GF-4 Prototype Formulation in Severe Taxi Fleet...

What tweaked me: Somebody referred to the “Taxicab Study” once again to defend the use of thicker oils on a recent thread. So I Think it is time to bring this up again, From: Effect of Lubricant Properties and Lubricant Degradation on Piston Ring and Cylinder Bore Wear in a Spark-Ignition...

Sure, it's a hobby for many. But does it really make any difference what oil we use? Few are going to extract every mile possible out of their engines. Many say that architects who design buildings know nothing about what it actually takes to build something. All they know is theory. I believe...

...After all, we have found that the oils do not get fully warmed up especially for trips to the grocery store. Fuel in the oil will not get burned off. Oil will get more fuel dilution as starting up engines will use extra fuel. Fuel dilution and loss of grade would likely be more common. To...

...At around 165F. The viscosity should be around 15 and the HTHS should be around 3.5 (plus or minus). My 812 SF generally runs with an oil temperature of 165F while driving at 80 MPH. Ferrari owners manuals often specify a target oil pressure of 70 PSI at 6,000 RPM as being ideal. This oil...

Below is my first UOA of the 812 Superfast on the second oil change from new. Included is the specs of the oil and the specs of the oil I will be using next, the RLI 0W30. The analysis was performed and interpreted by Terry Dyson, though he is retired for other than "old" customers. He provides...