---
product_id: 9628886
title: "STM-3 Ceramic Fuel Treatment for Diesel Engines – Cleans Injectors, Lubricates Upper Engine, Prevents Gelling, Removes Water – SiC Ceramic Technology – Made in USA (16 oz)"
brand: "cerma"
price: "¥24356"
currency: JPY
in_stock: true
reviews_count: 7
url: https://www.desertcart.jp/products/9628886-stm-3-ceramic-fuel-treatment-for-diesel-engines-cleans-injectors
store_origin: JP
region: Japan
---

# STM-3 Ceramic Fuel Treatment for Diesel Engines – Cleans Injectors, Lubricates Upper Engine, Prevents Gelling, Removes Water – SiC Ceramic Technology – Made in USA (16 oz)

**Brand:** cerma
**Price:** ¥24356
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** STM-3 Ceramic Fuel Treatment for Diesel Engines – Cleans Injectors, Lubricates Upper Engine, Prevents Gelling, Removes Water – SiC Ceramic Technology – Made in USA (16 oz) by cerma
- **How much does it cost?** ¥24356 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/9628886-stm-3-ceramic-fuel-treatment-for-diesel-engines-cleans-injectors)

## Best For

- cerma enthusiasts

## Why This Product

- Trusted cerma brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Cerma Ceramic Fuel Treatment for Diesel Engines 16 Ounces for Diesel Engines

## Images

![STM-3 Ceramic Fuel Treatment for Diesel Engines – Cleans Injectors, Lubricates Upper Engine, Prevents Gelling, Removes Water – SiC Ceramic Technology – Made in USA (16 oz) - Image 1](https://m.media-amazon.com/images/I/61viV+rA5WL.jpg)

## Customer Reviews

### ⭐ 1.0 out of 5 stars







  
  
    don't work, no customer service
  

*by V***. on Reviewed in the United States on February 10, 2022*

not only did i buy the fuel additive but TWO of their engine oil additives. almost 300 bucks for the 3 products. i am very mechanically inclined. ZERO engine problems. NOOOOOOOOOO difference in ANYTHING they claim. i should of know better. but saying that you can call them and blah blah blah...three emails, two even though amazon and nothing! i'm not looking for money back that's the funny part. maybe i got a bad batch? it was very cold when i got them all. for them to just send me the product would cost them next to nothing. so just proves to me it's crap! lab tested by who???? a 3 year old? literally did nothing! my dogs urine probably could do more. i never leave reviews, like ever! if this was a cheap thing, i'd laugh and say jokes on me. it was far from cheap! i'm pissed bc i sent very nice emails. was super cool. it's like a slap to the face. so now i blast. DO NOT BUY! the "reviews" that say anytime good are BS! plain and simple. hey...i warned you!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    I like it
  

*by J***T on Reviewed in the United States on October 6, 2013*

My car has a 1993 mustang motor and 5 speed transmission in a 1993 miata. I put both the engine additive and the gas treatment in the car at nearly the same time. The car definitely runsmore smoothly. Throttle response is much improved. Oil pressure is up 5 lbs. I am very pleased. I am planning another dyno tuning in the next few months. I expect a 6 to 10 hp increase (280 rwhp now) and an equal increase torque.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Four Stars
  

*by F***O on Reviewed in the United States on March 19, 2015*

Delivered on time and seems to improve drivability of my manual Mazda 6.

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**Shop now:** [https://www.desertcart.jp/products/9628886-stm-3-ceramic-fuel-treatment-for-diesel-engines-cleans-injectors](https://www.desertcart.jp/products/9628886-stm-3-ceramic-fuel-treatment-for-diesel-engines-cleans-injectors)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-16*