---
title: "Slow Rollin Inc — Clean Truck Check, Colusa, CA | CTC Finder"
description: "Slow Rollin Inc in Colusa, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/slow-rollin-inc-colusa/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Slow Rollin Inc

Clean Truck Check tester in Colusa, CA (Colusa 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 | 51 Birchwood Pl, Colusa, CA 95932 |
| County | Colusa County |
| Phone | (530) 870-1935 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Slow Rollin Inc 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 | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is North State Emissions Testing in Colusa, about 1 mile away. [See listing](https://ctcfinder.com/tester/north-state-emissions-testing-colusa/).

## Clean Truck Check testers in Colusa County

Slow Rollin Inc is one of 6 testing businesses in Colusa County on CARB's public tester list. 6 of them offer mobile testing and 2 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 Slow Rollin Inc offer mobile Clean Truck Check testing?

Yes. Slow Rollin Inc 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 Slow Rollin Inc test a 2012 or older diesel truck?

Slow Rollin Inc does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [North State Emissions Testing](https://ctcfinder.com/tester/north-state-emissions-testing-colusa/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Slow Rollin Inc charge for a Clean Truck Check?

Slow Rollin Inc has not published prices with us; call (530) 870-1935 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 Slow Rollin Inc a CARB-credentialed tester?

Slow Rollin Inc 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

- **[North State Emissions Testing](https://ctcfinder.com/tester/north-state-emissions-testing-colusa/)** — 3145 Wilson Ave, Colusa, CA 95932 — (530) 501-0865 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Dalpreet Kullar](https://ctcfinder.com/tester/dalpreet-kullar-live-oak/)** — Live Oak, CA 95953 — (530) 790-8998 — 13 mi. Services: mobile testing, OBD testing.
- **[Dans Diesel Performance](https://ctcfinder.com/tester/dans-diesel-performance-gridley/)** — 1825 Ringnecked Pheasant Ct, Gridley, CA 95948 — (530) 720-9349 — 14 mi. Services: mobile testing, OBD testing.
- **[Gridley Country Ford](https://ctcfinder.com/tester/gridley-country-ford-gridley/)** — Gridley, CA 95948 — (530) 961-2968 — 14 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Gridley Ford](https://ctcfinder.com/tester/gridley-ford-gridley/)** — Gridley, CA 95948 — (530) 403-3385 — 14 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Corona Trucking](https://ctcfinder.com/tester/corona-trucking-arbuckle/)** — 6795 Harrington Ave, Arbuckle, CA 95912 — (530) 933-3597 — 17 mi. Services: mobile testing, OBD testing.