what type of oil?

[diamondotg]

what weight of oil is best and gives the best protection 10w40,10w50,20w50???

 

[A2000RICH]

what weight of oil is best and gives the best protection 10w40,10w50,20w50???

that question lacks enough information to give a reliable answer--------it is like asking what bullet is best for my gun---------an answer would require info like the caliber of the gun-------the distance you intend to shoot-----what you were actually shooting at----etc etc---------exactly what kind of engine do you have-------how many miles are on the engine-----what kind of mods------what kind of use/driving-------what are the bearing clearances-------what kind of buildup-------etc---etc-------since you are on the TB forum it is probably safe to assume it is a 231 turbo-------if its stock the answer is very simple--------the engineers that designed it suggested 10w-30 and 5w-30 in real cold weather---------if 0w-30 existed at the time these engines were built and was reasonably priced that is surely what they would have suggested-------- viscosity is just one small part of the "protection" equation-------older engines require more extreme pressure additives (ie ZDDP) at the levels that they were found in older oils--------additives that are removed or reduced in most oils due to newer emission standards.........RC

 

[Hot Air]

We need a lot more info. Stock motor or not? HP? Race car or street car? If rebuilt, check with the builder. If stock, look in th owners manual.

I use 10w30 myself in my RPE motor. According to Jack Cotton, Donnie preferred 10W40 but it is hard to get so he agreed to the more available 10W30.

Conrad

 

[diamondotg]

stock motor,street car only asking because i saw somewhere where a guy was using 20w50 and thought the reason may have been for added protection. I usually run 10w30

 

[510TURBO]

10w30 brad penn green oil.... do your homework:biggrin:

 

[Red Regal T]

stock motor,street car only asking because i saw somewhere where a guy was using 20w50 and thought the reason may have been for added protection. I usually run 10w30

If that 10W30 gives you an oil pressure you are happy with, then it's good enough. I run 20W50 in my T because it has the stock oil pump. This gives me about 40psi at highway speeds. In my GN, I ran 10W40 with a high volume pump and it runs at about 55 psi at hiway speed. So, you see ... it's up to you.

 

[we4Mateo]

Wow! I have a stock pump and it's always over 50lbs at highway speed and over 20lbs idle no matter how hot it is out and I use 10W-30 Amsoil with ZPPD. Switching to Brad Penn next though.

 

[just plain john]

Maybe it's a regional thing, but I've lived in Houston my whole life and have never heard of Brad Penn oil. What's so special about it?