jerryc41 Loc: Catskill Mts of NY

Do any of you use bulk WD40 and put it into spray bottles? It costs about $0.25/oz, vs maybe $0.90/oz in the spray can.

Julian Loc: Sarasota, FL

I am still on my 10-year old spray bottle.

therwol Loc: USA

The spray cans last me 20 years or more. It's great for freeing up something that's sticking, but it's a piss poor lubricant. It dries out too quickly.

TonyP Loc: New Zealand

I used to use WD40 then changed to Inox about 20 years ago. Don't know if you can get it in the US but I find it useful for so many more different jobs than I did WD40.

dustie Loc: Nose to the grindstone

Mix in a bit of ATF (automatic transmission fluid) with your bulk WD40 in self-fill spray bottles (about 6%-8% ATF is good for connections not heavily corroded/rusted....10% or more if you are dealing with more seriously stuck connections.)

The WD (water displacement formula 40) displaces the water in the connection, but can leave the surfaces quite dry. The ATF lubricates the connection, even after the Water Displacement formula evaporates away.

Yes, the bulk arrangement with ATF added can do a better job lubricating than the typical standby WD40 sold in stores most everywhere in pressurized cans.

dustie Loc: Nose to the grindstone

The pressurized cans are convenient in their own way, the contents were not originally intended for lasting lubrication.
I've seen some other formulations on some shelves over the past couple years in some locations, with advertising of improved lubrication, but never knew of a reason to buy any to try.

alawry Loc: Timaru New Zealand

I used to use it in the bicycle repair shop (35 years) owver the last 5 years or so a rep supplied an aerosol equivelant with a teflon additive which worked well and had a lube quality as well. Adding ATF sounds like a good idea, unless you are using it for it's specific qualities; penetration and water displacement.

Lens Cap Loc: The Cold North Coast

A neighbor passed away and his wife as me to help clean out the house. There was a gallon of WD40 I took. It's been at least 10 years since I brought it home. I still haven't opened it.

jerryc41 Loc: Catskill Mts of NY

One of my old spray cans just ran out of air. I'll have to recharge it.

jerryc41 Loc: Catskill Mts of NY

Yes, it is funny how people think that WD40 is a lubricant. There are other products for lubrication and penetrating oils.

BebuLamar

Just like the TruFuel. The company that I work for also make a lot of 1 gal cans for WD-40. I am working on the vision system to inspect the handle and the weld quality on the spout.

agillot

Used to , i think it even come in 55 gallons drum .

jerryc41 Loc: Catskill Mts of NY

Ooh! I'll to look for one of them.

rcarol

I would forget what I put in the spray bottle.

burkphoto Loc: High Point, NC

That is because WD = Water Dispersant. It works best as a rust preventative and as a coating on things you want to shed water or shield from water. In college, I worked briefly for a textile machinery company (before textile businesses left the USA en masse in the 1980s-90s). WD-40 was sprayed on all sorts of parts to keep them corrosion- and rust-free. Gallon cans were everywhere on the shop floor. I keep a can of it in my shed to spray on garden tools, both before and after use.

WD-40 SPECIALIST is also a brand they put on other chemicals used for other purposes, including penetrating oil and an electronic/electrical contact cleaning spray.

Those familiar with DeOxIt and Chemtronics Electrowash would find WD-40's Electrical Contact Cleaner spray to be a good substitute. I used it to clean the connectors, controls, switches, and circuit boards of an old Harmon Kardon 330B stereo receiver. It removed all the dust from the circuit boards, and restored smooth function to all of the switches and potentiometers (volume, tone, balance...). It restored all of the RCA phono jacks to normal function. Replacing a few electrically leaky electrolytic capacitors was the only other thing needed to bring that classic, 50-year-old receiver back to life. It's great for small spaces like my workshop.