Amazon engine oil vs the world

[Karl]

If anyone on here has a GM pickup truck or newer BMW or Mercedes I understand the cars must use 0w20 or 5w20.

Anything above a 20 weight oil will cause the GM cylinder deactivation and cruising speed on the highway to not work/malfunction or operate inefficiently..

And on the BMW and Mercedes general running trouble with the engine.

Maybe GM and Lotus suggest staying with a 5w30 or 10w30 for a reason.

Food for thought.

[spork2367]

Originally Posted by Karl

If anyone on here has a GM pickup truck or newer BMW or Mercedes I understand the cars must use 0w20 or 5w20.

Anything above a 20 weight oil will cause the GM cylinder deactivation and cruising speed on the highway to not work/malfunction or operate inefficiently..

And on the BMW and Mercedes general running trouble with the engine.

Maybe GM and Lotus suggest staying with a 5w30 or 10w30 for a reason.

Food for thought.

There are a lot of variables oil weight is based around. Bearing clearance, shear strength, oil passage paths, temp range, etc.

Today's oil specifications for engines are much more heavily based on emissions, fuel economy, power, and variable valve timing. Most variably valve timing today is based on oil pressure.

Any engine engine that can run 10w30 in moderate temps can run 10w40 without an issue. Extreme cold weather is the only factor where you might want to consider sticking closer to the manufacturer spec. on the low side.

Good article:

https://www.amsoil.lube-direct.com/2...ht-motor-oils/

[Karl]

Originally Posted by spork2367

There are a lot of variables oil weight is based around. Bearing clearance, shear strength, oil passage paths, temp range, etc.

Any engine engine that can run 10w30 in moderate temps can run 10w40 without an issue.

I believe we all agree the LT5 at it's time was very advance with Mercury Marine building the engine with many tight clearances and specifications for optimal operation.

Anyone know what weight oil they ran for the 24hour world record run?

Was it 10w30?

[White Bullet]

Based on the change in formulation of Mobil 1 it is clear for me that I will change what I use. Has anyone used Valvoline VR1 Racing 10w-30? The Zinc is 1400 (ppm) and Phosphorous 1300 (ppm). I ask about this product as pricing places it a $33.00 for five quarts at Amazon. If it is not good product for our application so be it. Just looking for input in comparison to the other known good products at are available for our motors. Thanks.

[DRM500RUBYZR-1]

Originally Posted by White Bullet

Based on the change in formulation of Mobil 1 it is clear for me that I will change what I use. Has anyone used Valvoline VR1 Racing 10w-30? The Zinc is 1400 (ppm) and Phosphorous 1300 (ppm). I ask about this product as pricing places it a $33.00 for five quarts at Amazon. If it is not good product for our application so be it. Just looking for input in comparison to the other known good products at are available for our motors. Thanks.

We use the following oils in the shop on ZR-1's. They happen to be the same oils that I use in my own ZR-1.


1- Mobil 1 5W30
2- Mobil 1 10W30
3- Brad Penn 10W30 Partial Synthetic The Green (color) Oil
4- Amsoil 10W 40
5- Valvoline VR-1 10-30


I have used Mobil 1 products since 1976 and continue to use them in the ZR-1 even with the updated formulas.
I have used Brad Penn or at least the old Kendall GT since 1970.
Began using the Brad Penn every other year in my ZR-1 for over 4 years.
Only use Amsoil or VR-1 in the year between Mobil 1 in my car if I don't have Brad Penn around. These changes use oil with the higher Z, P, and ZDDP amounts.


Customers continue to favor or at least request the Mobil 1, followed by Amsoil, and VR-1.


Your choice(s) may vary.


I did however stop adding ZDDP to my oil or to customer cars.
If a customer requests it, I mention the possibility of chemical corrosion, and suggest they avoid it unless they are a chemical engineer and know precisely how much to use.


Again, your oil religion may vary, and I have not colluded with any oil company.


They are all very high quality oils.
Marty


Forgot to mention the Amazon 0-20.
While I would not opt to use it in the ZR-1, I see no reason to avoid it in other newer GM cars that require DEXOS approved formulations.
If it is good enough to earn the DEXOS approval, which would be critical for new car warranty claims, and GM is comfy with it, that kind of suggests it should be good enough to use it.
Although I do not read the Washington Post, I do purchase from Amazon.
M

[White Bullet]

DRM500RUBYZR-1 thanks for your input. I have been using Mobil 1, however as point out the formulation has changed and I do not want to have to use an additive as there are other choices that do not need them. I will try either the Brad Penn or Valvoline and go from there.