---
title: "Dan's CTC — Clean Truck Check, Winton, CA | CTC Finder"
description: "Dan's CTC in Winton, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/dans-ctc-winton/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Dan's CTC

Clean Truck Check tester in Winton, CA (Merced County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 6760 California St, Winton, CA 95388 |
| County | Merced County |
| Phone | (209) 564-1633 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Dan's CTC can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Taylor's in Winton, about 1 mile away. [See listing](https://ctcfinder.com/tester/taylors-winton/).

## Clean Truck Check testers in Merced County

Dan's CTC is one of 40 testing businesses in Merced County on CARB's public tester list. 35 of them offer mobile testing and 12 do smoke opacity tests.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Dan's CTC offer mobile Clean Truck Check testing?

Yes. Dan's CTC says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Dan's CTC test a 2012 or older diesel truck?

Dan's CTC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Taylor's](https://ctcfinder.com/tester/taylors-winton/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Dan's CTC charge for a Clean Truck Check?

Dan's CTC has not published prices with us; call (209) 564-1633 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Dan's CTC a CARB-credentialed tester?

Dan's CTC appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Taylor's](https://ctcfinder.com/tester/taylors-winton/)** — 6171 N Winton Way, Winton, CA 95388 — (209) 261-1048 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Elmer Araujo](https://ctcfinder.com/tester/elmer-araujo-merced/)** — Merced, CA 95348 — (209) 230-3926 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Lomeli’s Diagnostics](https://ctcfinder.com/tester/lomelis-diagnostics-merced/)** — 3568 Tammy Ct, Merced, CA 95348 — (209) 354-6680 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[MG Truck and Trailer](https://ctcfinder.com/tester/mg-truck-and-trailer-merced/)** — 646 Andrea Dr, Merced, CA 95348 — (209) 752-1084 — 5 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[San Joaquin Mobile Truck Check](https://ctcfinder.com/tester/san-joaquin-mobile-truck-check-merced/)** — 2752 Beachwood Dr, Merced, CA 95348 — (209) 261-3416 — 5 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Cen-Cal Truck Check](https://ctcfinder.com/tester/cen-cal-truck-check-atwater/)** — 3292 Mariner Ct, Atwater, CA 95301 — (209) 628-3882 — 9 mi. Services: mobile testing, OBD testing, motorhome testing.