The wrong behavior of some fuel station operators has made many people, including me, to be pessimistic about octane fuel, but after the explicit advice of a trusted mechanic and seeing the feedback of Digikala users, I decided to give it a try. Let me summarize the story. Some time ago I bought a 300ml Octane Booster Caspian Model 300 and things went so well that I decided to share my experience with you.
ending doubts; Why do we need octane booster?
When most drivers hear the name “fuel additive”, they remember gas station attendants who pour a bottle of additive into the tank without coordination and then demand an exorbitant amount of money. If we factor in such scams, by the way, octane booster is considered to be an efficient solution to solve the problem of working modern engines with gasoline available in our country.
low octane and knock phenomenon; A serious threat to the engine
The most important function of fuel additive is to increase the octane number of gasoline. According to the technical people, the octane number indicates the fuel’s resistance to spontaneous combustion under pressure. My trusted mechanic told me some time ago that high compression ratio engines or turbocharged engines require higher octane gasoline to run properly.
But when low octane gasoline is used in these engines, the fuel ignites spontaneously due to the high pressure and heat before the spark plug reaches. This phenomenon, which is called “premature combustion” or “knock”, creates a sound similar to clicking.
Repetition of the knock phenomenon can cause an abnormal increase in temperature, unwanted pressure and shocks to the moving parts of the engine and cause serious damage in the long run.
Octane booster Caspian model 300 with the ability to increase gasoline octane up to 3 units, is designed exactly to deal with this problem and prevent long-term mechanical damages.
The effects of non-standard gasoline on vehicle efficiency
In addition to the knock problem, the unfavorable quality of gasoline leads to the accumulation of carbon deposits in the fuel system, injectors and combustion chamber. These deposits over time disrupt the fuel injection pattern, increase fuel consumption and lower overall engine efficiency.
One of the prominent functions of Caspian Octane Booster is its cleaning and de-scaling property, which helps maintain the health of injectors and restore optimal engine performance. The cleanliness of the ignition system is directly related to the increase in power and acceleration of the car.
239,500
214,000 Toman
Positive points
- Improved acceleration and smoothness of engine performance
- Reduction of knocking noise and incomplete combustion
- Reasonable price compared to foreign brands
- Durable packaging and safe lid
- Domestic production with easy access in reputable stores
Negative points
- Its effect becomes better known after several times of use
- In very old cars, it may not have a significant result
- Pungent smell when opening the bottle cap (due to strong chemical compounds)
Introduction and technical specifications of Caspian model 300 octane booster
Caspian octane booster Super MMT model is one of the best-selling supplements in the Iranian market, which has gained the trust of consumers by obtaining a high satisfaction score.
Key features; Increasing octane, acceleration and cleaning
Using this product will help you achieve the following goals:
- Increasing the octane number: It increases the octane number of gasoline by 3 units and helps to adjust the ignition system.
- Increase acceleration and power: By optimizing combustion, the engine is able to achieve its maximum power output. My personal experience shows that this happens in the acceleration of the car, especially when starting to move and overtaking.
- Cleaning and descaling: This additive helps clean injectors and fuel lines. Its makers say that they can guarantee the long-term efficiency of the engine.
- Reducing fuel consumption: Indirectly, it helps to reduce fuel consumption by regulating combustion and de-scaling.
Review of MMT composition and its technical considerations
In my internet searches and research, I found out the important point about the presence of MMT (methylcyclopentadienyl manganese tricarbonyl) compound in the product formulation. This metal additive is really effective in increasing octane, however, its continuous and indiscriminate use can cause long-term concerns about deposits on spark plugs and car catalysts.
For this reason, experts say that consumers of high model and sensitive cars should not use this product continuously and every time they fill the tank. I raised the issue with my trusted mechanic and he emphasized that this octane booster is a powerful tool that should be used in situations of shortage of super gasoline or the periodic need to clean the system.

A practical guide to using Caspian fuel supplement
If you want my personal opinion, I have to say that after some time of use, the initial pessimism is gone. I can even confirm the positive comments of many users. My car, which used to knock at certain speeds when using normal gasoline, now after injecting the octane booster, it shows a smooth, somewhat quiet, and clearly powerful performance. Of course, you should also know the correct way to use Caspian model 300 octane booster.
Correct injection method and mixing ratio
Following the correct instructions to thoroughly mix the supplement with the fuel will get you results sooner:
- Tank almost empty: The best time to add the supplement is when the car tank is almost empty (less than 10 liters of gas in the tank).
- Complete injection: Pour the entire contents of the 300 ml bottle of Caspian Octane Booster into the fuel tank.
- Filling the tank: Immediately after injection, fill the tank with regular gasoline up to a maximum of 50 liters. This ratio (300 ml of additive for 50 liters of gasoline) guarantees maximum effectiveness and helps the additive to mix evenly with the fuel.
checking the results; From reducing knocking noise to improving acceleration
Only after about 100 kilometers of driving, I could clearly see positive effects:
- Noticeable reduction: The engine’s slight knocking sound, which signaled premature ignition, was completely eliminated. This is the most important sign of the product’s success in increasing the octane number and preventing engine damage.
- Better responsiveness and increased acceleration: The car performed better especially on hills and when I needed sudden acceleration. I can even say like a powerful but obedient horse!
- Smoother engine performance: The fine vibrations of the engine in stationary mode and quiet driving have decreased, indicating that the ignition system is in good condition and working better.


recommendations for better performance; Guide to use and reduce risk
Here are some recommendations to get the most out of the Octane Booster Caspian Model 300 while minimizing the risk of injury from MMT.
- Specific frequency: Use this product periodically. For example, you can go for octane booster every three to four times you fill up the tank.
- Fuel prioritization: If possible, use higher quality gasoline first and save additives for when you must use lower octane gasoline.
Final conclusion
Caspian octane booster model 300 ml made me put aside my initial skepticism towards fuel supplement because in practice, it was able to improve the performance of my car’s engine by significantly increasing the octane number and cleaning properties.
DigiCala users have given this product a stunning rating of 4.2 out of five and 85 of them are satisfied with their purchase. There are many positive comments where drivers like myself report reduced knocking and improved acceleration. So let me say with more boldness what I should have told you in the first place; this product is absolutely functional and if you can buy it in the amazing offer of DigiCala, it will be really great.
Source: Digikala Mag
Frequently asked questions about purchasing Octane booster Caspian model Super-MMT
What cars should use octane booster?
1- Turbocharged and high-tech cars: these engines need high octane and will get the best results from this product.
2- Cars with high compression ratio (higher than 10:1): which, if using normal gasoline, quickly experience knocking.
3- Cars that are used to super gasoline, but sometimes it is not possible for them to access it.
4- For cars with a lower compression ratio, maybe the cleaning property of the product is useful, but increasing its octane is not necessary.
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