Type of oil in 427 S/O

[Scufty]

Craft is only providing warranty with one type of oil? Are you joking me? That's crazy!
Someone please tell me how the "type" of oil makes that big a difference that a guy won't warranty his engines?

[fordracing65]

Originally Posted by Scufty

Craft is only providing warranty with one type of oil? Are you joking me? That's crazy!
Someone please tell me how the "type" of oil makes that big a difference that a guy won't warranty his engines?

How long is the warranty good for, it may be a deal he has with Gibbs...

[DanEC]

Originally Posted by Scufty

Craft is only providing warranty with one type of oil? Are you joking me? That's crazy!

Where did you read this? If above I apparently missed it.

[Scufty]

Originally Posted by DanEC

Where did you read this? If above I apparently missed it.

Originally Posted by Keithc8 View Post
We have used about every oil possible. We will only warranty our engines if Joe Gibbs is used. If you look at the facts it has more ppm zinc and less ppm detergent than most any other oil. Try to stay away from most all oil that you can buy through a regular parts store. Those oils have to meet the lasted epa standards which have taken most all zinc out and added lots of detergents. As you well know zinc is what bonds the oil to the metal and the high ppm detergents wash the zinc away. This works great for late model stock engines with overhead cams and low spring pressure. Bottom line, make sure there is plenty zinc in the oil to save problems in the future.