Grease stain on black tshirt

[LadyEloise]

Help please.
There is a grease stain on dh's favourite black tshirt. I have washed it at 40 degrees with bio detergent but the stain hasn't come out.
Any suggestions please ?

Green fairy washing up liquid. Wet the mark slightly then rub it over & let it soak in then put in the washing machine as normal.

Thank you.
I'm using blue fairy liquid not green at the moment, will that make a difference ?

I have found green to be better but blue will get rid of most of the mark, from experience with my favourite top.

I would bing on any washing up liquid I had in the house on - I use it a lot for grubby stuff like shirt collars and stains, and it usually works first time. Better to use it before it's been washed for future reference.

Thanks again.