What is the best way to clean spilt motor oil out of trunk carpeting?

WHOOPS! Use several old TOWELS to get the bulk of it out! Get some TSP cleaner from the hardware store and mix with WATER to get moreof ti out! TSP dissolves the oil a bit and allws wtater to opiock it oup! use OIL SORB fond at most AUTO STORES which is like KITTY LITTER. Then use a VACUUM to get the OIL SORB OUT or a small hand shovel! use BRAKE CLEANER spray as the LAST RESORT! iT is DRY CLEANER in a can and can dissolve most stains and oi clumps easily! ALSO DAWN was used to clean the DUCKS found in the OIL SPILLS and then some! IT DOES remove oil! GOOD LUCK! you have a REAL JOB on your hands here! GOOD LUK!!

Unfortunately I doubt the carpet is recoverable and is now ruined. Get some oil absorbent material and soak-up the worst of the oil, then degrease with a solvent like white spirit. Remove the old carpet and get some carpet off-cut that has a colour either similar or contrasting to the original and cut that to fit the backing board to your trunk and replace. Job done - been there done that

you will have to remove the carpet in your trunk to get to the spill. oil being oil, absorbs in almost everything. hope this helps

A big bucket, barrel, or troth. Fill with water, add laundry detergent, place carpet in and swish it about, rinse. repeat as needed.

Dawn for dishes, it works great for oil or grease