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D2 A8/S8 (1997 - 2003)
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Which fuel additive to cleanup the engine?
Posted by: Mortem76 (102530) on 2017-11-09 23:46:16

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Hi All,

I almost finished the renovation of my A8 (ABZ engine with 107000km) and I am planning to have early next year a Dyno test (followed by a remap and another Dyno) to know what are the real HP and NM available on the car.
To prepare as well as possible and ensure I will have the most relevant result, I plan to make the test about 500km after an oil change with Total Quartz 20W50 (being in Bangkok where the temperature usually range between 30-40C this is the recommended engine oil grade by Audi) and use only the best gas available here, meaning Shell V-Power Nitro+ (RON95 E10 as normal Benzine without alcohol is almost impossible to find).
I also think I should make some cleaning of injectors, engine, etc... using a fuel additive.
What do you think I should use: Audi OE additive (if yes, which of the 2 references available) or an after-market one such as Techron?
How many time should I use the additive to ensure the engine is well cleaned?
Should I do it before or after the oil change?

After the test in done, I will share with you the Dyno results in case any of you would be interested
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