Dissapointing year end with my Roush 427R

[ERA Chas]

Originally Posted by james911pro

Mark at Roush told me to try Rotella-T 15w40. apparently (after doing some research on the net and with an engine shop) there is a special additive in it that counteracts the oil burning.

Varmit-forget the Rotella-T. "Mark has told James a fable.
There is nothing in any oil to 'counteract' oil consumption. Especially what you've got-1 qt/150 miles. Even cement wouldn't stop that.
Instead call Mark and ask if Roush is using 'low-tension' rings on the pistons. And ask what the piston to wall and valve guide clearances are. The motor obviously has too much clearance machined in.

[Varmit]

Originally Posted by ERA Chas

Varmit-forget the Rotella-T. "Mark has told James a fable.
There is nothing in any oil to 'counteract' oil consumption. Especially what you've got-1 qt/150 miles. Even cement wouldn't stop that.
Instead call Mark and ask if Roush is using 'low-tension' rings on the pistons. And ask what the piston to wall and valve guide clearances are. The motor obviously has too much clearance machined in.

Kind of what I'm afraid of, but there is no smoke or anything coming out the pipes
want to do a compression test and leakdown