the gent that wrote it is a GM POWERTRAIN Eng and
often writes about the engines that are well in excess of 100k.

i been doing the "blow out the carbon" for decades, on all different cars
and all with well over that 100k mileage.
no, i have never had a piston go through the hood or anything happen
that damages the engine.

the reason we call it the "Italian Tuneup" is cuz he wrote the
article in regards with the '93 Allanté, a Cadillac designed and mfg'd
in Italy and the recipient of the 1st production NorthStar .

just keep in mind, he does not concone or recommend jack rabbit starts
from 0 to 100, he talks about doing it from 55mph to 70mph to keep the
combustion area clean and healthy ...

https://www.cadillacforum.com/fb.asp?m=7154

 

Hi all.
Just wondering...I drive some open highway miles daily, reaching speeds 70-80mph. Would my car benefit from this?

fyi. 2004 Deville. I'm averaging 22 mpg.

-jasper

 

Can't hurt and you are giving your battery a nice charge.

Click on the link in the post above yours for WOT instructions