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omg, where do the old false thoughts come from? Please submit your test data to us at BITOG.

Your car is pretty sure its engine is hot, like 200 degrees F, in summer, or in winter. You have fallen for the false rumor on BITOG, and the old man's tale, that you need a "thicker" oil in summer hot temps. If it's a 100 outside, the engine is at 200. That's a fact. Engines aren't alive...

The HPL tech guy says their oil can possibly go to 35k mile OCI, I believe. Fram Endurance filter is $12, only available at Walmart.

First, read the owners manual on oil selection. Then, I'd immediately consider changing to Mobil 1™ ESP X2 0W-20, with Mobil 1 oil filter or Fram Endurance filter. No flush needed. This may give you the most torque, HP & MPG, due to an ester additive. Run to 10k miles OCI. If car is not...

Mobil 1 0w16 EP will give you highest torque, HP, & MPG. The only one with the secret slippery oleo ester developed by Mobil and Honda Racing, afaik.

since your name is @ARCOgraphite , I assume you worked with me at ARCO's Harvey, Chicago Research Labs. I tested ARCO Graphite in the field when I was with ARCO, and developed ARCO Supreme gasoline.

To participate, I'm running my own test with 1 qt of VR&P with 3.5 qt of M1 EP that already has 10k miles on it. Running to 15k miles OCI. This starts the cleaning immediately. Based on my previous similar tests with Valvoline High Mileage leak seal oil when it first came out, I expect full...

I would change to Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-16, using Mobil 1 oil filter, or Fram endurance oil filter. You would get maximum torque, HP, & MPG. Change every 10k miles.

"Dirty" looking oil, like a Mobil 1 EP towards the end of its 15 to 20k mile OCI is still fine. It can be checked with chromatography paper. Apparently oil knowledge has been lost in year 2024. https://rxmechanic.com/clean-vs-dirty-engine-oil/

HPL says their oils are good for 35k miles, but their customers don't have the guts to go that long. "Dirty" oil just means that the oil is doing its job suspending carbon. The oil is fine until TBN doesn't make spec. Hopefully you used a Mobil 1 or Fram Endurance oil filter.

I'm going to use VRP to clean the bottom end of an engine: 3qt M1 0w20 EP, with 1qt VRP 0W20. Since people are already reporting pretty good and quick cleanup just looking in the oil fill hole, this cocktail should suffice over 10k miles, without losing the M1 EP properties. Done the same with...

Your oil turning black just means that it is doing its job. Owners have been told this since high detergent oils came out 70 years ago. Detergent additives clean & pick up carbon in suspension. I'd run it awhile yet, maybe put one drop on some thick paper once in a while. This is the oil lab...

Typically, heavy-duty diesel engine lubricants have had a minimum HTHS viscosity of 3.5 cP. ESP oil is formulated for passenger car diesels. There is nothing special about the heat in Texas, since the engine operates at 200 degrees Fahrenheit after a 5 minute warm-up. During warm-up the 0W-20 is...

Use Mobil 1 0W-20 EP(Extended Protection) HM(High Mileage) motor oil, only. Use Mobil 1 oil filter, or Fram Endurance filter. Reset the OLM as usual, but extend oil OCI intervals for you savings & convenience. Run the M1 0W-20 EP HM for 15k miles of 20k miles of Mobil marketed OCI. Can run in...