[V8] Alusil/Nikasil oil burner?

[Bastian Preindl]

Hi,

finally I got some "official" information concerning the ABH:

The internal product information for the introduction of the V8 4.2 
(10/91) says:

"The engine block is made of an aluminium alloy with 17% silicon 
contingent. In a special etch process the hard silicium cores are 
exposed, which form the piston contact surface. Usual piston liners are 
therefore needless.

The light alloy pistons have galvanically applied iron coatings with a 
flimsy tin film on it. Benefit: Highest friction resistance."

The press map of 12/1991 says the same thing.

So, what is it?

Thanks

Bastian