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Mobil 1 formulations have changed, not saying better or worse. TGMO has a strong additive package with a lot of dinuclear moly but I quit using it when found the base oil inferior to GTL base. Now use Pennzoil Ultra Platinum with a strong additive package and GTL. Definately wait for the rebate...

Thank you.

Just thinking from my view. The turbo increases the load on the main bearings. Maybe secondary the oil temperature at the turbo bearings.

Just thinking about Mazda… (I like them) Add a turbo to same engine and they go from 0w20 to 5w30. As far as a modern engine with variable or pulsed output oil pumps controlled by ECM and VVT I prefer not to shoot from the hip.

Sad but true… Personally think going over car manufactured recommended viscosity is kinda stupid. Except when you add a turbo to the engine. That throws the same engine into a higher oil viscosity.

Many different temperatures inside the engine and one factor to consider to have a higher viscosity is a turbo. Just a guess but maybe the GM engineer is considering that.

I understand what you are saying. Here is my view… The oil filter usually has a check valve that allows a lot of resistance to complete drainage along with the gear oil pump. Bet there is no issue at parking at the airport. However draining the oil for a week with the purpose of complete oil...

Guess we see things a bit different. But from my thinking allowing the upper engine to drain that long has gotta be bad when you start the engine. Oil takes time to fully pump up to fill all the oil system as opposed to short oil change time. The difference is the oil pump is completely drained...

The whole idea of an oil change is not to let the engine set after the warm up for drain. There is plenty of lube in the engine for it to turn over to get the new oil circulating. Allowing the oil to drain for a week and starting up is a very bad idea.

I have taken it to another extreme. I noticed my Miata had a dry engine and normal OEM oil fill difference of .8 quarts. My OCI is 6 months. Got a great deal on Kirkland oil and changed it one month early, then at OCI put in the good stuff. The solution to the .8 quart dirty oil is dilution and...

IMO HTHS is a thick or thin conversation in disguise. Throw a dart at the board with the OM in mind with new quality oils. Always choose the severe service OCI from the OM and keep in mind oil experts are not experts in the requirements of your car. My best guess is a modern car has the...

Just a note on pre filling oil filters. His video shows the oil filter slanted. If your new car has electronic throttle you can depress the accelerator past 80% when turning over the engine. That will prime the oil filter without starting the car.

You should see them make happy meals at the food source…

Thanks… Can you say anything said here at BITOG is not generalization? IMO that statement is…. But every one has a view. There is not a black and white answer, just a move to the better. But to just look at HTHS without any other variable?

Just less VII to shear. Not a big deal. I drive short trips and rarely get oil temps up.

Instead of scraping the oil off which the oil control rings should do they hydroplane. There is a too thick point. Low tension piston rings? https://ricksfreeautorepairadvice.com/heavier-weight-oil/

Initially after changing to an oil with good detergent and dispersant package the oil color could look dark. After 2nd (3rd) OCI then should look cleaner. Thinking about my PUP on the second change +5 months here.

My 2019 Miata runs 0w20 in winter, 5w20 in summer 2 OCI per year. Completely amateur opinion here, every one has a opinion. Once on the highway it is running hydrodynamic in the bearings at RPM. That means the only friction on the bearings has to do with oil viscosity. The other issue is piston...

I learned a few things on this video. One being that friction and wear are two separate things. Apologize if this has already been posted as I do not follow this site. Looking forward to future videos from this source.

So… who uses GP-1 racing oil in their every day driver? Loaded with zinc and with a short oil change life. Can you compare and say it is a thick or thin discussion?