[78w72]

Originally Posted by Formulajones

Just for giggles related to the original post on diesel oil.

Amsoil actually makes a high zinc oil that is multipurpose and compatible with diesel and gas engines. This formulation is made for heavy duty use and states works well with flat tappet camshafts specifically with higher tension valve springs.

Anyway, for those that don't want to lube their gas engines with diesel oil, here's one oil advertised for use in both.

https://www.amsoil.com/p/premium-pro...-motor-oil-aro

most diesel oils are rated/designed for 4 stroke gasoline & diesel engines. amsoil is one but the other popular brands specifically state they are rated & Ok to use in gasoline engines, delo, rotella, valvoline etc etc, they all state they meet specs for both & are perfectly fine to use in either type of engine.

https://www.chevronlubricants.com/en...ae-15w-40.html

im sure theres some merit to that article but it seems to focus on the "higher rpm" use of gasoline engines or race situations... 99% of the time a gasoline street car is operating below ~2500-3000 rpm. diesel oils can be used in a gasoline engine with zero problems since most are rated for that purpose.

[Formulajones]

Originally Posted by 78w72

most diesel oils are rated/designed for 4 stroke gasoline & diesel engines. amsoil is one but the other popular brands specifically state they are rated & Ok to use in gasoline engines, delo, rotella, valvoline etc etc, they all state they meet specs for both & are perfectly fine to use in either type of engine.

https://www.chevronlubricants.com/en...ae-15w-40.html

im sure theres some merit to that article but it seems to focus on the "higher rpm" use of gasoline engines or race situations... 99% of the time a gasoline street car is operating below ~2500-3000 rpm. diesel oils can be used in a gasoline engine with zero problems since most are rated for that purpose.

Yep, that's why I posted it. I just find it interesting more than anything else

[track73]

A long time ago I read where toilet paper filters did too good of a job and took out a lot of the additives in the oil along with the dirt.

[Sirrotica]

Originally Posted by track73

A long time ago I read where toilet paper filters did too good of a job and took out a lot of the additives in the oil along with the dirt.

This is another case of misinformation, additives bond to the oil molecules they are not filtered out, but actually extends the additives life longer by the absence of fine matter being removed in the oil that a conventional filter can't remove.

Instead of listening to opinions on the net, educate yourself about by pass filters, that's what I did. I know of no downside of the product whatsoever.

Link to how by pass filters work: https://www.machinerylubrication.com...ass-filtration

Blackstone labs, which FJ has referred to in his posts for oil analyzation, is a proponent of by pass filters in any and all engines. If you're attempting to run extended oil change intervals, a by pass filter will allow you to run many times over the manufacturers recommendations safely.

Of course the recommendation he makes to have engine oil analyzed for anything you want to know about the engines health, and the oils life is needed for a program other than stock engines following manufacturers recommendations.