
I've found this
"Contaminated coat
The animal appears to have oil/tar or unknown substances on its coat or feet. Due to the nature and sensitivity of cats and dogs this can be extremely harmful and toxic if ingested.
Prevent your pet from licking the area.
Wash the area with water containing a mild detergent, rinse thoroughly with clean water.
Vegetable oil or butter can be helpful to remove tar. Swarfega can be helpful to remove oil.
Contact your vet if there is heavy contamination or if you are worried."
I would use a diluted cat shampoo spray on from a hand sprayer & towelled off or a "self-rinsing"cat shampoo"like
Bio Groom Cat lovers Klean Kitty waterless shampoo(scroll down the page to find it)sprayed on & towelled off. Use an old towel as all the oil will come off on to it
oops forgot you can also use Goop
>Groomers Goop Shampoo 473ml (Ref. 4435c)
Groomers Goop Shampoo. Groomers Goop is the professional's choice to degrease the coats of Persian, Himalayan, Maine Coon cats and long-haired dogs. Nothing works better to remove grease and oil from your pet's coat. Groomers Goop formula is specially designed to remove the most difficult stains and leave your pet's coat clean, lustrous, full of body and grease free. Removes yellowing in white areas and great for stud tail on cats.