Tomorrow i have to remove some nuts holding an EGR flange and pipe on an exhaust manifold
I am expecting it to give me some grief, its been on for 360,000 kms.
I have been spraying the parts for the last week each couple of days with a Penetrating Spray.

Any other suggestions for this type of job?
Would it be better to attempt removing the nuts when the engine is warm or cold?

I remember my grandfather would use the old Penatrene in that small plastic tube.