Gallagher Diesel Services LLC

05/12/2026

Three heads. One goal. Get the job done right. 🔧🚛
Today the crew knocked out our 4th truck of the day AND 2 trailers — because at Gallagher Diesel Services, the work doesn’t stop until our customers are taken care of.
It takes teamwork, long hours, and dedication behind every repair that rolls out of our shop. Proud of this crew for showing up and getting it done every single day. 💪🔥

05/11/2026

A small coolant leak today can turn into a major engine repair tomorrow.
Summer heat is coming fast — now’s the time to check: • Coolant systems
• Belts & hoses
• A/C performance
• Fan clutches
• Overheating issues
Don’t wait until you’re stranded on the side of the road.
📍 Serving Ardmore & surrounding areas
📞 Call Gallagher Diesel Services to get scheduled.

04/29/2026

🎉 Belated Birthday to the Boss Man 🎉
Today we celebrated Tim… aka the brother I never asked for but somehow ended up with anyway 😂
Happy (late) Birthday to the guy who runs the shop, keeps us all in line (most of the time), and still finds time to give us grief daily 😅
We appreciate everything you do—even if you act like you’re not gonna eat the cupcake and then absolutely do 🧁🤣
All jokes aside, we wouldn’t trade ya. You keep this place going and make work feel like family 💪
Here’s to another year of putting up with all of us 🔧🔥
Go wish him a happy birthday… he’s officially 36 and feeling it 😏👇

04/23/2026

04/21/2026

Big shoutout to David, the youngest diesel tech in our shop—bringing 8 years of experience to the table 💪
Here he is getting this Mack MP7 engine block cleaned and prepped the right way. Around here, we don’t cut corners—every surface is cleaned, checked, and ready for a solid rebuild.
Age doesn’t define skill—work ethic does. And David proves that every single day.
At Gallagher Diesel Services, we take pride in doing it once and doing it right—whether it’s a full rebuild or routine maintenance.
💪 Hard work. Clean builds. Reliable results.
📍 Ardmore, OK
📞 580-630-2804

04/17/2026

Nothing like tearing into a Cummins ISX and bringing it back to life the right way. No shortcuts, no guesswork—just experience, precision, and putting in the work where it counts.
At Gallagher Diesel Services, we don’t just fix trucks…
we keep your livelihood moving. 💪
From diagnostics to full tear-downs, we’ve got you covered.
📍 Ardmore, OK
📞 Give us a call and let’s get your rig back on the road.
580-630-2804

04/16/2026

☀️ DON’T WAIT UNTIL THE HEAT HITS — GET YOUR A/C READY NOW! ☀️
Oklahoma summers don’t play around… and neither should your truck 🚛💨
At Gallagher Diesel Services, we’re making sure your A/C is blowing ICE COLD before those 100° days roll in. Whether you’re hauling, working, or just trying to survive the heat — we’ve got you covered.
❄️ A/C Inspections
❄️ Freon Recharge
❄️ Leak Detection
❄️ Full System Service
💥 Beat the rush — schedule now before everyone else is sweating it out!
📍 Proudly serving Ardmore & surrounding areas
📞 Call or message us today to get on the schedule 580-630-2804
👉 Stay cool. Stay working. Stay ahead.

04/10/2026

Shop shenanigans 🤣

02/17/2026

We’ve got a packed house today, but we always make room for quality diesel work. From injectors to turbos, we get you back on the road FAST. 🚛💨
580-630-2804