O Brasil tem o PIOR COMBUSTÍVEL do MUNDO? Então a culpa é SUA!

Product/Topic Reviewed

The video is a review-style test and explanation focused on Brazilian gasoline octane rating (resistance to detonation/irregular combustion) and how different fuels affect an AMG-tuned twin-turbo V8 engine under controlled high-load testing.

Key Features / What’s Tested

• Octane rating behavior
  • Resistance to knocking/detonation (irregular combustion)
• Engine safety response
  • Monitored via the car’s factory piezo knock detection system, tracking:
    • Ignition timing pullback (knock control reducing timing)
    • Which cylinders “drop out” / lose ignition timing at the end of pulls
• Controlled conditions
  • Same dynamometer/setup day, with parameterized temperatures (engine/oil/intake)
  • Fuel drained and replaced with at least ~20L before the next fuel
  • Multiple passes per fuel, emphasizing results are consistent across runs

Fuels Tested (Unique Points)

The host tests regular + 4–5 premium fuels available at Brazilian pumps (using ROM octane standard, not RPM/other additives performance).

1) Regular Gasoline (Benchmark)

• Described as “incomplete gasoline”
• Minimum 93 ROM (NP807/2020 referenced)
• Very strong smell; “yellowish-gold”
• Test result range: ~530 to ~560 hp
• Ignition timing: ~7 degrees pulled across cylinders (knock control active)

2) Shell V-Power Racing

• Minimum 100 ROM (noted change from 98 → 100 in formulation)
• “Most beautiful color” and mild smell
• Measured power: ~579 to ~582 hp
• Behavior:
  • At the end of the pull, 2–3 cylinders removed and up to 2 degrees timing pull (light knock control)

3) Petrobras Podium

• Minimum 102 ROM
• Measured power: ~569 to ~570 hp (slightly lower)
• Crucial observation:
  • No ignition timing reduction on validated runs
  • Engine runs “clean,” but not at maximum power

4) Petronas Primax Autoctane

• Minimum 100 ROM
• Measured power: ~577 to ~582 hp
• Behavior:
  • Similar to Shell; 3 cylinders affected in some pulls
  • Up to 3 cylinders in one pull
  • Timing within expected range

5) Ipiranga IPMAX Pro

• Currently minimum 100 R (host mentions it used to be higher earlier)
• Measured power: ~570 to ~572 hp
• Behavior:
  • Only two cylinders pulled up to ~2 degrees

Main Findings (Pros/Cons From the Test)

Core Conclusion

• Higher octane generally means less detonation risk (less ignition timing pull), but it does not automatically mean higher power.
• The engine map appears tuned/validated around ~100 ROM.
• When fuels exceed that level (e.g., 102 ROM Podium), the engine remains safe/clean but can produce slightly less peak power due to how the calibration is managed.

Best Performance (Power)

• Closest to “maximum” measured hp:
  • Shell V-Power Racing and Petronas Primax Autoctane
  • Peaks up to ~582 hp

Best Knock Control / Safety (Clean Combustion)

• Petrobras Podium (102 ROM)
  • Showed no ignition timing reduction in validated pulls
  • Best “knock resistance” behavior, but not the highest peak power

Regular Fuel (Lowest Quality for This Setup)

• 93 ROM regular caused the most noticeable knock control:
  • ~530–560 hp
  • ~7 degrees ignition timing pull
  • Host implies it could lead to engine damage if pushed beyond protective limits

Pros Mentioned

• Premium fuels (around 100 ROM) provide:
  • better power retention on a tuned map
  • manageable/limited ignition timing corrections
• The video stresses that modern ECUs can detect knock (piezo sensor / knock control) and protect the engine.

Cons Mentioned

• Octane isn’t the only thing gasoline must do
  • Additives such as detergents/antioxidants/friction reducers are not evaluated here.
• Buying “premium for more power” can be misleading:
  • More octane doesn’t always increase power—especially when the engine calibration targets a specific octane level.
• Regular gas can trigger stronger knock control:
  • pushing too far without adequate octane can stress and potentially break engines.

Comparisons / Broader Claims

Myth-Busting

• The host argues the common Brazilian belief “premium makes the car go faster” is not inherently true.

International Pump Labeling and Choices

• US: multiple octane pumps (e.g., 87/89/93)
• Japan: standard vs high-octane (“Haoco”)
• Europe/Italy/France: examples like 95/98/100

Blame Narrative (General)

• The host suggests both buyer and seller contribute to fuel-choice ignorance.
• Many people don’t know octane ratings or where to check them.

Verdict / Recommendation

• For a tuned high-load setup calibrated around ~100 ROM, the practical recommendation is that ~100 ROM premium fuels (e.g., Shell V-Power Racing or Petronas Primax Autoctane) offer the best balance of:
  • high power
  • acceptable knock control
• If the goal is maximum detonation margin/safety, 102 ROM Podium shows the cleanest knock behavior, but may not deliver the absolute highest measured peak power for this specific calibration.

Overall: Premium gasoline around 100 ROM appears to be the “sweet spot” for this test car and methodology. More octane beyond that reduces knock but can reduce peak power due to calibration behavior.

Unique Points Mentioned About Octane (as Context)

• Octane rating = resistance to detonation (harder to ignite/combust under knock-prone conditions)
• Detonation = irregular combustion causing pressure “hammer blows,” which can physically damage engines
• Factors increasing detonation tendency:
  • engine design/combustion chamber geometry
  • forced induction vs NA
  • higher compression ratio
  • hotter operating conditions (climate/engine temps)
  • aggressive calibration
• Detection methods described:
  • knock heard by humans (too late, mostly)
  • ionic method (spark plug monitoring)
  • piezo knock sensor/microphone (“no knock” sensor)
• Octane testing history and standards:
  • CFRE engine (Cooperative Fuel Research Engine)
  • RON (ROM) vs MON, and how AA/AKI-style indices are computed in the US

Speakers / View Contributions

• Single main speaker/host drives:
  • the technical explanation
  • the dynamometer testing methodology
  • the conclusions and recommendations
• Any other “gentlemen/guest” references are rhetorical; no distinct separate speaker opinions are clearly presented beyond the host’s narration.