Hi guys,
Went to a job today where he had spilt almost a whole bottle of black bumper restorer on the carpet in hall.
He rang on Tuesday but today was earliest I could get there.
He e- mailed Turtle Wax who replied it was unlikely anyone could remove it.
Tried White spirit, Prochem High Force And Sol.Nr3 as a starter on different bits.
White spirit worked best as I thought it would but it was still pretty black.
Put Dry Blend in tank and heated to 75.
Treated with white spirit agitated then sprayed with Sol 3 and Hi Force in different areas..
Extracted with Dry Blend.
It worked after several repeats the carpet was clean

Both Hi Force and Sol3 worked equally well.
Cheers,
Doug