Keller Heartt Company

10/16/2026

Busy shop, no time for stockouts.

Keeping these four fluids on hand helps your bays stay on schedule and your customers coming back:

1. Motor oil: TRUEGARD Synthetic Blend 5W-30, meeting current API SN and GF-6 standards.
2. Coolant/antifreeze: TRUEGARD Green 50/50, pre-diluted so there's no mixing guesswork.
3. Transmission fluid: TRUEGARD Multi-Vehicle ATF, compatible with a wide range of automatic transmissions.
4. Brake cleaner: TRUEGARD Non-Chlorinated Brake Cleaner, heavy-duty and fast-drying.

Pro tip: Ordering in bulk 55-gallon drums lowers your per-quart cost, which adds up across a busy shop.

https://hubs.li/Q04yttpz0

Explore TRUEGARD's comprehensive range of industrial oils and lubricant collections

10/13/2026

Running the same coolant on every machine in the shop? That habit might be costing you more than you think.

Straight cutting oil and water-soluble coolant do different jobs. One's built for lubrication, the other for cooling, and matching the right one to the right machine (screw machines vs. CNC mills, for example) makes a real difference in tool life and finish.

We put together a breakdown of which fluid fits which machine, six common problems that point to a mismatch, and how to fix them, including a pH range worth keeping an eye on to protect your sump life.

Read it here: https://hubs.li/Q04yttnN0

Compare straight cutting oil and water-soluble coolant by machine type, speed, and heat load to pick the right metalworking fluid for your shop.

10/07/2026

Attention Microbreweries, Bakeries, and HVAC Contractors!

Did you know that using the wrong glycol in your chilling or heating loops can lead to massive compliance violations or environmental fines?

For food and beverage processors, standard glycol won't cut it. You need an NSF-certified, non-toxic formulation to protect against accidental food contact.

Mechanical and construction contractors also rely on propylene glycol for sensitive underground loops and heated sidewalks to protect local soils and groundwater.

That’s why TRUEGARD 960 NSF Certified Food-Grade Propylene Glycol is a best-seller. It keeps your operations running efficiently, prevents system corrosion, and guarantees safety compliance.

Order directly online and get fast, free shipping straight to your facility.

Shop TRUEGARD 960 Propylene Glycol Drums today: https://hubs.li/Q04ytSbS0

10/01/2026

Myth vs. Reality: "Diesel engines need to idle to warm up." 🚚

While that was once true, modern diesel engines actually warm up much more efficiently under light driving conditions than prolonged idling.

In fact, daily, extended standard idling can accelerate engine wear, thin out your motor oil through fuel dilution, and clog DPF and EGR systems.

If idling is unavoidable in your day-to-day operations, make sure you're using high idle (900–1,200 RPM) to keep combustion temperatures stable and minimize deposits. More importantly, switch to an oil engineered to withstand these exact conditions—like Shell Rotella T6 5W-40 Full Synthetic.

Browse our diesel engine oils today: https://hubs.li/Q04ytMrv0

09/29/2026

Nearly 100 years ago, Keller-Heartt started as a Chicago lubricant distributor. Today we also supply industrial chemicals, cutting fluids, DEF, and storage and dispensing equipment to businesses across the country.

We're proud to be featured by CO— by U.S. Chamber of Commerce in their series celebrating the small businesses that have shaped America's economy over the last 250 years.

In the article, our President and Owner Brian McGrath talks about why we chose to grow instead of standing still when the lubricant market slowed. He also explains why staying open to new opportunities has kept us going since 1929.

Thank you to our customers, who have grown right alongside us.

Read the full story 👇
https://hubs.ly/Q04yvtkV0

See how Keller-Heartt Oil adapted to changing markets by expanding its offerings and serving customers in new ways.

09/28/2026

Our latest guide blog down how to choose the right temporary rust-preventative oil based on your material, storage duration, and downstream operations:

✅ Oily Film: Best for long-term storage and shipping.
✅ Dry-to-Touch: Ideal for in-process handling and assembly lines.
✅ Vanishing Oils (like TRUEGARD 3025): Perfect for immediate next-step operations—evaporating completely so you can skip the degreasing step entirely.

Read the full guide on preventing corrosion between operations and keeping your production line moving:

Learn why machined parts rust between CNC operations, how to prevent it, and the right rust-preventative oil; TRUEGARD 3025.

09/21/2026

Generic propylene glycol wasn't built for food and beverage environments — and it can turn into a compliance problem the moment an auditor asks about it.

Introducing TRUEGARD 960: NSF H1-certified propylene glycol for cooling and heat-transfer systems where accidental food contact is a risk. Same cooling performance, without the exposure.

Where it fits: → HVAC freeze/burst/corrosion protection → Immersion freezing and cooling liquid foods → Carbonated beverage packaging → Fermentation cooling → Refrigeration coil defrosting → Process cooling & heating

Not sure whether your system needs H1 or H2 certification? We broke it down here: https://hubs.li/Q04vB-cN0

Questions about whether 960 is the right fit before your next audit — talk to our team.

Using the wrong lubricant can fail an audit. Discover why H1 lubricants matter, how they differ from H2, and where food facilities go wrong.

09/16/2026

Cherry-fresh. Pumice-powered. 10% off. 🍒

Heavy-duty hand cleaner for hands that do heavy-duty work — four one-gallon jugs per case.

Code TURBOCLEAN10 — expires 11/15.

Gent-L-Kleen Pumicized Turbo Cherry heavy-duty lotion hand cleaner with American pumice and cherry scent. VOC-compliant. Case of 4 x 1-Gallon jugs.

09/15/2026

The fluid running through your machines isn't just lubrication. It's tolerance, tool life, and surface finish.

Use the wrong cutting, soluble, or slideway oil for the application and it shows up as chatter, premature tool wear, or a machine down for a sump cleaning — not just a line on the invoice.

TRUEGARD's metalworking lineup is built around matching the fluid to the job instead of the other way around:

→ Cutting oils — reduce friction, carry away heat, extend tool life → Soluble oils — cooling + lubrication for high-volume milling, turning, drilling → Vanishing/stamping oils — protect the sliding surfaces and dies that keep equipment precise

Dealing with foaming or odor in your coolant sump? That's usually a fluid-application mismatch, not a bad batch. We wrote up the common causes: https://hubs.li/Q04vBlM-0

09/07/2026

Fall's coming fast, and DEF, fuel, and a clean truck matter more than most drivers think this time of year.

Cold temps crystallize DEF, gel your fuel, and salt eats away at paint and undercarriages all winter long.

Worth getting ahead of it now instead of dealing with a fault code on the road. We've got BlueDEF, fuel treatment, and fleet wash in stock — no minimums, fast shipping.

Questions about what to stock up on? Drop a comment or send us a message.