What Race Oil do you trust?

[MR DERBY CITY]

Originally Posted by RPM5595

So what is it about break in oil that is bad to use full time? What was the cause for the bearings going away? If the break in oil is better for initial run in how can it be worse for normal operation? This makes no sense to me.

In the REAL world, there are NUMEROUS superstock cars in the D3 area that run COMP CAMS 10-30 break in oil......FULL TIME. I am going to wait till after the HOLIDAYS to inform them that they are all just begging for trouble....LOL !!!!!

[SSDiv6]

Originally Posted by MR DERBY CITY

In the REAL world, there are NUMEROUS superstock cars in the D3 area that run COMP CAMS 10-30 break in oil......FULL TIME. I am going to wait till after the HOLIDAYS to inform them that they are all just begging for trouble....LOL !!!!!

Well...like everything, it is a choice.

First, break in oil was designed to increase the friction of the piston rings to help them wear-in and seal in the cylinder and includes a high amount of Zinc and Moly to assist with breaking in the camshaft and lifters.

Break in oils are mineral and not synthetic and do not have modifiers to reduce the friction. After the engine seals, there is no need for it and its continued use, keeps doing what the break in oil was designed to do, a controlled wear.

On the other hand, racing oils, both mineral and synthetic, contain friction modifiers to reduce friction and reduce wear. As I said earlier, it up to the engine builder or racer on what they want to use.