WD-40 Original vs Kroil
WD-40 Original
The original. Goes in easy. Loosens everything.
Where It Wins
- + Much cheaper
- + Available everywhere
- + Multi-purpose
- + Smart Straw convenience
Kroil
The legend. One-millionth of an inch. Nothing is too tight for Kroil.
Where It Wins
- + Superior penetration
- + Creeps into microscopic gaps
- + Preferred by machinists
- + Aerospace pedigree
Kroil wins on pure penetrating power. WD-40 wins on price and versatility.
This isn't really a fair fight. WD-40 is a multi-purpose product that happens to penetrate. Kroil is engineered from the ground up for maximum penetration — one-millionth of an inch gaps. Kroil costs more, but when you have a truly stuck part, the price difference is irrelevant.
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