My own modified version of Ed's Red is what I use, consisting of John Deere Low-viscosity Hy-Gard ATF, MEK, kerosene, mineral spirits, toluene or xylene, some Lube Control LC-20, and about 1.5-2 ounces of Lucas Synthetic Oil Stabilizer per quart (for added lubricity and to use up my existing stock of it). It works for me.

If a label lacks a skull and crossed bones, the product cannot be very effective.