Sureguard brand oils is owned by Smitty's Supply Company in Louisiana. Their oil is no better than any of the other major brands. But they do manufacture a good product. Click the link.
Wix.
best oil to use in 7.3 diesel is rotella brand oil
the best valve oil is either the brand of blue juice or you also can you sperm
30wt oil of any brand will work
The best oil to use is 5W-20, any brand.
Amsoil By far the best.
use a 5W30 engine oil Brand is not important.
Any major brand synthetic oil.
NIVARA Virgin Coconut Oil
The best oil you can use in your vehicle is the oil that is recommended by the manufacturer. Use that weight oil and no other way. The brand of oil you use is your choice. Just pick a name brand oil as they are all excellent lubricants.
Synthetic oil is synthetic oil. Any major brand will be of high quality.
I do think it is the best and most commonly used.