I've never used minwax but I have got oil out of clothing and leather by putting talc powder on it and letting it sit on it for quite a few hours and at times overnight.

Have you tried mineral spirits/turpentine or paint thinner. You can clean brushes with these things, and if you do it soon enough you can clean material, although it will fade many materials. You would probably need to wash with detergent to get all of it out. Don't put in dryer until you are satisfied with the stain removal.

I've never had to get miniwax out but for oil stains, I place a towel behind/underneath the stain then sprinkle with corn starch and let it sit overnight.

Good luck, oil stains are the worst!

Acetone or laquer thinner if the mineral spirits don't do the job.

Dawn dish soap might work
I salvaged a tech shirt that was tangled in my rear chainrings on my bicycle.
I did have to wash a few times but it worked
I never tried min wax

I spilled Minwax stain on white slacks & used, in succession, acetone, lacquer thinner, mineral spirits & Dawn dishwashing liquid. I did not wash between applications, I just let the fabric dry, except for Dawn, which never dries. The stain did not appear to be coming out. Finally, I threw the slacks in the washer with bleach. Presto. The stain was gone. I've no idea which product worked.

Thanks everyone. I have acetone, Dawn, talc and Tide. Can't use bleach as it's got colors of white, dark aqua and dark purple.
I often use peroxide or baking soda in my wash. At least it's not a dark stain. I could cry!
Monica

Aww, I feel bad for you. If you can't get the stain out, post a picture of your shirt & the size. Maybe we can find a replacement.

I splattered a dress with Minwax stain and slathered it with Lestoil. It took every last bit out.

I don't know about Minwax but I'd try the dishwashing liquid before the solvents. Test for color-fastness, but I use it with food-grade oily stains all the time. Just squirt it on, rub it in and keep rinsing/rubbing in as hot water as the fabric can take (even if it says cold water wash you can usually get away with warm on cottons, again depends on the dyes). Then wash as usual.

If it was an oil-based stain, the pigments might not come out even if the oil does, but it's worth a try.

Shakley Degreaser is fantastic for removing set in oils like salad dressing and food splatters from cooking, even old set in stains I thought were a lost cause. However not sure about something like Minwax because that has pigment doesn't it?

Thanks so kindly all! Not sure the talc did any good but I had already wet the stain before putting power on it. Next I tried straight acetone. It did take some of the oil colorant out but not enough. Right now it's got Dawn on the two spots. I have a kick-but* auto (interior) spot remover that is a miracle product. I'll try that next. I'm sure the oil is gone by now. If nothing works, I'll call the store to see if they can find one this late in the season. I kinda doubt they can. But they're used to me calling and trying to find the exact shirt or one like it in different colors. If I really really like it, I'll buy an extra. For those that were wondering "why is she using stain in her favorite shirt?" Well, I wasn't really. I let the grandkids use the extra stain on large box that DH's new sink came in. Normally I would put a cloth over the lid before I started hammering it close. I didn't :(

Bad news is the stain hasn't come out completely. Good new is that due to the pattern and colors of my shirt, the stain has faded enough that I don't think it will be noticeable. Thanks for all the helpful advice :)
Monica

Lighter fluid takes out oil based stains.

I have used carbona stain devils to remove food oil stains from clothes and it worked well. I purchased mine from walmart for I think $1.88. Not sure how it will work for the minwax though. I'm glad the stain lightened enough that the shirt is still wearable.

Here is a link that might be useful: stain remover