Search results

Formula 1 have an interesting start procedure due to the bearing clearances. Oil is heated reducing the viscosity of the 10w-60 oil before start. https://www.auto123.com/en/news/f1-technique-how-to-start-a-formula-1-engine-part-1/35675/ Imagine using 10w-60 in your car that you had to pre...

Well… If there is RPM on the engine the oil is pumping and the bearings are in hydrodynamic portion of the Stribeck curve. Cold start 0w-5 is the same viscosity as what you have in your car when you start it when cold. There is oil separation and the engine will not blow up. The 5 viscosity is...

Fluid is not compressible to an oil pump, all viscosity oil pumps the same as a positive displacement until the pump goes into bypass.

104 deg. and 212 deg. f. viscosity in relation to the 2nd 212 deg. viscosity number as if that 2nd number was a straight viscosity number. All oil starts off too thick and with temperature gets thinner.

My view is this is not a ”one time” for this lad. Starving an engine oil pump of oil is completely different. Compare apples to apples. If a car overheats the normal weight oil overheats and goes thin. It is not out of reach of thinking that 0w oil goes through to the 5 weight oil to get to what...

Wow… You have a vivid imagination. Ridiculous from my view. Or nothing will happen at all.

So… Imagine the worst thing that could happen. Really…. no big deal.

I enjoy your thin oil discussions and your testing to extremes. Racing oil is not meant to go far concerning the additives. Personally if any car I owned had a choice of viscosities I would choose the thinnest viscosity recommended just cause I hate to waste HP and fuel. But past the...

Engine Labs have some really good info. Keep in mind that every engine has its own requirements.

An SUV but we never really went further than that. I explored changing out the bearings since he did a lot of towing.

Thanks Zee… agree everything is variable when that pressure relief happens (temperature?). My neighbor had low pressure oil and we looked into a different spring to increase the overall oil pressure on the oil pump rebuild. It did not work when we increased the spring pressure. He ended up...

You know that the pump pressure relief starts around 2000 RPM and increases from there give or take right?

There was a thread that was closed that brought up cavitation wear on bearings. Thought it was an interesting subject and found this. https://www.sciencedirect.com/science/article/abs/pii/S0301679X16302109

TGMO went cheap on the base oil and use VI improvers to make the 0w-20 multi viscosity spread. Base oil is 80-85% of the oil.

Is that from Driven oil website? Seems clear… Temperature and bearing clearance. I would also add the engine RPM since this is race oil right?

I like the moly for immediate wear but that type moly called dinuclear needs more than trinuclear moly to work. The viscosity index is really high on TGMO 0w-20. (227) That would be great if it came from a GTL or PAO base oil that made a viscosity index without polymer VI improvers. But the base...

The only issue I have is TGMO base stock. The oil relies on the big slug of moly and VII. Like the moly but too much VII. As long as your OCI is short TGMO is great but I have moved on personally to PUP with a GTL base stock.

In the case of 5w20 vs 0w20 of the same oil and the 0w20 needs VII the 5w20 would not need as much if not any. Also the base oil would be higher cSt in the 5w20. (of the same oil)

When VW had issues with GDI they blamed the oil. Ford had issues with spray bore cylinders, Exc… It is how fast the car company reacts to issues. The car company that fixes the issues quicker will be the ones that will come on top. First year engines are a learning curve. Some companies hide the...

Time fixes all. Instead of looking for oil to fix hardware issues maybe some here should concentrate their minds on choosing reliable engines. https://www.motorreviewer.com/