Verify the effectiveness of cleaning reputable engines

BARDAHL Engine Tune-Up and Flushing
Clean the crankcase of stubborn dirt and grime that cannot be removed by normal flushing.
The engine is cleaned of stubborn dirt and grime that cannot be removed by normal flushing.
BARDAHL's unique lubricant strengthening agent improves the lubricating power of the engine oil, making it safe to use for engine parts.
It can be safely used on parts in the engine.
Inject before changing engine oil and allow to idle for 10 minutes or more, or use after 50 km to 300 km in accordance with the dealer's instructions.
Clean after 50 km to 300 km of driving according to the dealer's instructions. Clean after running 50km to 300km according to the dealer's instructions.
In this verification video, engine oil that has been run 13,000 km was
In this verification video, engine oil that had been run for 13,000 km was drained and Verdal ETF was injected into the unused oil after the oil change.
The unused oil and VARDAL ETF are mixed and run 56 km.
After running, the oil is not completely black, but it is brownish.
The brown stain on the top of the cylinder head became lighter and the oil strainer
The area around the oil strainer was clearly clean, so there was a flushing effect.
After the flushing and oil change, there was a pleasant change during the test run.
The engine noise became quieter and mellower.
When starting from a standstill, there was a knocking sound from the engine and a delay in starting.
and there was a symptom of engine knocking sound and delay in starting (especially when using air conditioner). (Especially when using air conditioner).
After flushing and oil change, the symptoms were resolved and the car became lighter.
After flushing and oil change, the symptoms disappeared and the car became lighter.
The torque of the engine seems to have increased, especially when going uphill.
Is it the effect of flushing? Is the oil film of high performance engine oil
Is it the effect of high performance engine oil film? I am not sure.
It may be a synergistic effect of the cleanliness of the engine and the high performance oil.
and the synergistic effect of the high performance oil.