Treated my interconnects with Deoxit D5 today

I bought Tweek years ago, it evaporated in like a year or two, even though it was sealed tightly

You were fortunate.

Stabilant 22 appears to the equivalent to Tweek.  It is about $60 for a vial of it which should last for years and years.  Check out their website as users of it speak in glowing praise of it, including lots of technicians.  I am just happy that my system returned to its former splendor.  There is an old adage that says, "if it ain't broke, don't fool with it."  

I’ll go out on a limb and say they’re not equivalent. 

"D.W.E. was established in 1986. Our product originated in 1976, from Wright Electroacoustics, where it was based on the R&D work of Wm. M. D. Wright. After several years of field trials, the final product, Stabilant 22™ was introduced by Sumiko Audio, under the trade name TWEEK©."