Cleaning Grease stains on microfiber
 

On my biking vest, which is made out of some kind of microfiber. I have little spots of grease spots from riding or handling the bike. Has anyone find a good cleaner for those little spots.

I've tried Oxy Clean and citric hand clear (doubled as pre-treater). Anything else that would work well?

Those above cleaners get rid of 90% of the stain but it's still visible.

Lestoil is great for killing grease stains.

That said, it's unlikely to have any effect if you've already cleaned it several times. Probably you've washed out all of the oil, and whats left are tiny particles of asphalt/metal/dust/whatever embedded in the fabric. That stuff does not come out easily, if at all!