Did you know?

[onetrack]

Have they developed a version of WD-40 for electric mowers yet? 😄 

[Jerry_Atrick]

yah.. its for the wheels

[old man emu]

For freeing rusted threads a 50/50 mixture of acetone and transmission fluid is a cheap alternative. Apparently the acetone reacts with the iron oxide, making it brittle so it breaks when a twisting force is applied. The transmissiion fluid is simply a very thin lubricant. WD-40 is mostly petroleum distillates. I suppose the costliest item is the can it comes in.

[red750]

I understand the WD stands for Water Displacement.

[onetrack]

I use a 50-50 mix of diesel and ATF for breaking up corrosion in rusted cylinder bores - it seems to work pretty well, especially if left for a few days. ATF contains strong detergents that dissolve varnish and gummy deposits that will glaze up automatic transmission clutch plates, and gum up valves and spools in transmissions, causing erratic operation - and diesel is well known as an excellent penetrant and lubricant.