---
title: "Oscar Romo — Clean Truck Check, South Gate, CA | CTC Finder"
description: "Oscar Romo in South Gate, CA is on CARB's Clean Truck Check tester list.  Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/oscar-romo-south-gate/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Oscar Romo

Clean Truck Check tester in South Gate, CA (Los Angeles 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 | South Gate, CA 90280 |
| County | Los Angeles County |
| Phone | (323) 680-2870 |
| Mobile testing | No |
| OBD testing | No |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Oscar Romo can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Not listed |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Not listed |
| 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 Chris Ancheta in South Gate, about 1 mile away. [See listing](https://ctcfinder.com/tester/chris-ancheta-south-gate/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Chris Ancheta in South Gate, about 1 mile away. [See listing](https://ctcfinder.com/tester/chris-ancheta-south-gate/).

## Clean Truck Check testers in Los Angeles County

Oscar Romo is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In South Gate itself there are 13 listed businesses, 9 of them mobile.

## 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 Oscar Romo offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Chris Ancheta](https://ctcfinder.com/tester/chris-ancheta-south-gate/) (about 1 mile).

### Can Oscar Romo test a 2012 or older diesel truck?

Oscar Romo does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Chris Ancheta](https://ctcfinder.com/tester/chris-ancheta-south-gate/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Oscar Romo charge for a Clean Truck Check?

Oscar Romo has not published prices with us; call (323) 680-2870 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 Oscar Romo a CARB-credentialed tester?

Oscar Romo 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

- **[Chris Ancheta](https://ctcfinder.com/tester/chris-ancheta-south-gate/)** — South Gate, CA 90280 — (562) 612-2847 — 1 mi. Services: mobile testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Dieseltester](https://ctcfinder.com/tester/dieseltester-south-gate/)** — 9706 Pinehurst Avenue, South Gate, CA 90280 — (323) 240-0943 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Ebenezer Mobil Repair](https://ctcfinder.com/tester/ebenezer-mobil-repair-south-gate/)** — 5120 Firestone Pl, South Gate, CA 90280 — (562) 280-9075 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Eddie’s Clean Truck Test](https://ctcfinder.com/tester/eddies-clean-truck-test-south-gate/)** — 9305 Mallison Ave, South Gate, CA 90280 — (209) 793-2040 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Eduardo Soria](https://ctcfinder.com/tester/eduardo-soria-south-gate/)** — South Gate, CA 90280 — (323) 567-8842 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Gabriel Garcia Jr](https://ctcfinder.com/tester/gabriel-garcia-jr-south-gate/)** — South Gate, CA 90280 — (323) 561-2055 — 1 mi. Services: OBD testing.