Service Overview
Diesel trucks tow, haul and idle hot — exactly the duty cycle that cooks transmission fluid. Regular service with the correct heavy-duty fluid is what keeps an Allison, Aisin or heavy-duty automatic alive.
The service involves fluid exchange with the exact specified fluid, internal and spin-on filters where fitted, pan inspection for debris, and a level set by your transmission's precise procedure.
Signs You Need This Service
- Towing or working the truck regularly
- Fluid dark or burnt on the dipstick
- Shudder or delayed engagement
- Interval reached — often 30,000–60,000 severe-duty miles
Consequences of Ignoring It
- Clutch wear leading to slipping under load
- Overheating events on grades with a trailer
- A four-figure service skipped becoming a five-figure transmission
Recommended Service Interval
Severe duty (towing/fleet): every 30,000–60,000 miles. We'll confirm your spec.
Price & Time
Pricing depends on vehicle details, parts needed, repair difficulty, location, appointment timing, and availability. We will review your request and contact you with a price before scheduling.
No payment is collected with the initial request. After reviewing the vehicle, repair scope, parts, location, and access requirements, we will send a written quote with any required deposit before confirming the appointment.
Parts, fluids, distance, timing, and vehicle details are reviewed before we confirm your written quote.
Frequently Asked Questions
Why contact for a custom quote?
Do you service Allison transmissions?
Can you do our whole fleet on site?
We come to you.
Book diesel transmission service at your home, workplace or fleet yard — anywhere in the Indianapolis metro. Warranty terms provided in writing when applicable.