Delo SynBlend Diesel Oil Change
Starting at$500
- Chevron Delo 400 XLE SB SynBlend 15W-40 diesel engine oil
- New oil filter
- Drain and refill to your engine's capacity
- Done at your truck's location — we come to you
Mobile Commercial Truck Repair, CARB Clean Truck Check & Diesel Maintenance — Fremont, CA
We come to your truck. Foxx Inc serves owner-operators, small fleets and commercial truck owners throughout Fremont, the East Bay and the San Francisco Bay Area — Clean Truck Check testing, diagnostics, repair and oil changes, right where your truck is parked.
- Mobile CARB Clean Truck Check — $79 — for trucks, buses, RVs & motorhomes, by a CARB-credentialed tester
- On-site diesel oil changes: Delo SynBlend from $500, Shell Rotella T6 from $600
- Open 24 hours, 7 days. Diagnosis before parts, estimates before repairs.
- Mobile — We Come to You
- Open 24 Hours
- CARB-Credentialed CTC Tester
- Clean Truck Check $79
- Trucks, Buses & RVs
- Truck Diagnostics
- Owner-Operators & Fleets
Our most requested service · $79
Mobile CARB Clean Truck Check (CTC) — $79
Clean Truck Check is California's heavy-duty vehicle emissions inspection program, run by the California Air Resources Board (CARB). It requires periodic emissions testing for diesel and other non-gasoline heavy-duty trucks operating in the state.
In plain English: your truck gets tested on a schedule, and if its emissions systems aren't working right, it needs to be fixed. Owner-operators and fleet owners need to keep up with testing to stay in compliance — and the best time to find a problem is before a deadline, not after.
Why test with Foxx Inc?
- We come to your truck — yard, job site or parking spot. No driving to a test site.
- If testing shows a problem, we can diagnose it on the spot. Repairs are quoted before work begins.
- Combine testing with an oil change or inspection in the same visit.
- Trucks, buses, RVs & motorhomes — if it needs a Clean Truck Check, we test it. Visiting the Bay Area in a diesel RV? We'll come to your campground.
One mobile team, start to finish
From test to repair to routine maintenance
Most testers only do one piece. We handle the whole cycle at your truck, so problems found during testing actually get fixed — and stay fixed.
Clean Truck Check
Get your CARB CTC test done.
Diagnostics
If a problem shows up, we find the real cause.
Repair
Approved repairs, quoted before work starts.
Preventive Maintenance
A plan so it doesn't happen again.
Oil Changes
Delo SynBlend from $500 · Rotella T6 from $600.
Clear starting prices
Diesel truck oil changes
Heavy-duty diesel oil and a new filter, changed at your truck — choose the brand you prefer.
Shell Rotella T6 Full Synthetic Diesel Oil Change
Starting at$600
- Shell Rotella T6 full synthetic diesel engine oil
- New oil filter
- Drain and refill to your engine's capacity
- Done at your truck's location — we come to you
Final pricing may vary depending on vehicle, engine, oil capacity, filters, and service requirements. Confirm pricing before service begins.
Commercial truck services
Testing, diagnostics, repair and maintenance for heavy-duty diesel trucks.
Most requested
CARB Clean Truck Check
Mobile Clean Truck Check (CTC) testing for trucks, buses and motorhomes — any vehicle that needs it — by a CARB-credentialed tester, with diagnostics and repair if there's a problem.
$79
Truck Oil Change
Mobile diesel oil changes with Delo SynBlend or Shell Rotella T6 full synthetic, plus a new filter — done where your truck is parked.
Starting at $500
Truck Diagnostics
Check engine and warning light diagnostics, electronic troubleshooting, starting and electrical problems — diagnosed before parts are replaced.
Diagnostic pricing confirmed before work begins
Truck Repair
Mobile mechanical and electrical repair for commercial trucks, quoted after diagnosis so you know the cost before work starts.
Quoted after diagnosis
Truck Inspection
General condition and maintenance inspections for commercial trucks — a clear written picture of what needs attention now and what can wait.
Call or book for current pricing
Preventive Maintenance
Scheduled maintenance for owner-operators and small fleets — oil, filters, fluids and inspections planned around your routes.
Priced by maintenance plan
Who we work with
Owner-operators
Your truck is your income. We explain findings in plain terms, confirm pricing before work, and work to get you back on the road.
Small fleets
Schedule Clean Truck Checks, oil changes and maintenance across several trucks so they're not all down at once.
Commercial vehicle owners
Box trucks, service trucks, dump trucks and other heavy-duty diesel vehicles.
Local businesses
Companies with one or two work trucks that need testing and maintenance handled in one visit.
We come to you
Mobile service across Fremont, the East Bay and the Bay Area
Based in Fremont, between I-880 and I-680, we drive to trucks across Alameda County, the Tri-Valley, the South Bay and Contra Costa — at your yard, job site or parking spot.
Fremont, CA
Mobile service along I-880 (Nimitz Freeway) & I-680
Newark, CA
Mobile service along SR-84 / Dumbarton Bridge approach & I-880
Union City, CA
Mobile service along I-880 & Whipple Road
Hayward, CA
Mobile service along I-880 & SR-92 / San Mateo Bridge
San Leandro, CA
Mobile service along I-880 & I-580
Oakland, CA
Mobile service along I-880 (Nimitz Freeway) & I-580
Pleasanton, CA
Mobile service along I-680 & I-580
Livermore, CA
Mobile service along I-580 / Altamont Pass & I-680
San Jose, CA
Mobile service along I-880 & I-680
Berkeley, CA
Mobile service along I-80 / I-580 (Eastshore Freeway) & I-880
Concord, CA
Mobile service along I-680 & SR-4
Common questions
What is a CARB Clean Truck Check?
Clean Truck Check is the California Air Resources Board's (CARB) heavy-duty vehicle inspection and maintenance program. It requires periodic emissions testing for heavy-duty diesel and other non-gasoline vehicles that operate in California, performed by a CARB-credentialed tester. The goal is to catch emissions-related problems so they get repaired. For the official details, see CARB's Clean Truck Check program page.
Where can I get a Clean Truck Check in Fremont?
Right where your truck is. Foxx Inc is a mobile, CARB-credentialed tester (Tester ID E275460) based in Fremont, open 24 hours. Book online with the truck's location, call (909) 569-3922, or email carbctc@foxxinc.us.
How much does a Clean Truck Check cost?
Our Clean Truck Check test is $79, and we come to your truck. You pay when the test is done. CARB's separate annual compliance fee is paid by the vehicle owner directly to CARB and isn't included.
What vehicles can you do a Clean Truck Check on?
Any vehicle that needs one. That includes diesel trucks and tractors, box trucks, dump trucks, buses and shuttles, diesel motorhomes and RVs, agricultural vehicles, and trucks registered in other states. If CARB requires a test for your vehicle, we can come to it and test it — $79.
What happens if my truck has a problem during testing?
We'll explain what the test found in plain language. Many issues show up as stored fault codes or emissions-related readings. From there, you can have us diagnose the cause and give you a repair estimate. Nothing is repaired without your approval.
How much does a truck oil change cost?
Our Delo SynBlend diesel oil change starts at $500, and our Shell Rotella T6 full synthetic diesel oil change starts at $600 — done at your truck's location. The final price depends on your engine's oil capacity, filters, and any additional service needs. We confirm the price before we start.
Will I get an estimate before repairs begin?
Yes. We diagnose first, explain what we found, and give you an estimate. No repair work starts without your approval.
Is preventive maintenance worth it for an owner-operator?
For most owner-operators, yes. When your truck is your income, unplanned downtime costs more than the repair itself. Regular oil changes, inspections and early diagnosis help catch problems while they're smaller and cheaper, and let you choose when the truck is off the road.
Guides for truck owners
CARB Clean Truck Check Requirements: A Plain-English Overview
What the Clean Truck Check program asks of truck owners, where to confirm the official rules, and how to stay ahead of testing deadlines.
What Happens If a Truck Has Problems During Clean Truck Check?
A problem during testing is a starting point, not a dead end. Here's how to go from test result to fixed truck.
CARB Clean Truck Check Guide for Owner-Operators
When you are the whole company, compliance has to be simple. A practical checklist for owner-operators.
Mobile truck service — we come to you
Foxx Inc is based in Fremont, CA and drives to your truck — at your yard, job site, parking spot or on the road — anywhere in the East Bay and SF Bay Area.
- Phone (24 hours)
- (909) 569-3922
- Email — Clean Truck Check
- carbctc@foxxinc.us
- Email — oil change, repair & everything else
- foxx@foxxinc.us
Find us on Google and Yelp — reviews help other truck owners find us.
Hours
Open 24 hours, 7 days a week
Where we go
Not listed? Call — we cover the wider Bay Area.
Need a Clean Truck Check or truck service?
Book online in a minute, or call — we're open 24 hours and come to your truck.