BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - Something holding the power back on 435d

Watsey · 11-26-2019, 02:02 AM

I use Archoil 6400D-Max.

Now, I don't have any proof whether it works (I've not had the head off the engine, not used an endoscope through one of the ports) so it could be a waste of money, but the engine runs more smoothly when/after using it so I'll keep using it.

I also use Archoil 6900D-Max with every tank of fuel and this definitely helps with smooth running and reduces diesel clatter.

Don't bother with any fuel additives or aerosol sprays for cleaning the IM and ports - I tried them and they make no difference at all. The only way to clean these areas is to have the IM removed for chemical cleaning, and to walnut blast the ports.

11-26-2019, 02:02 AM	#18
Watsey Major General 6416 Rep 8,499 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	I use Archoil 6400D-Max. Now, I don't have any proof whether it works (I've not had the head off the engine, not used an endoscope through one of the ports) so it could be a waste of money, but the engine runs more smoothly when/after using it so I'll keep using it. I also use Archoil 6900D-Max with every tank of fuel and this definitely helps with smooth running and reduces diesel clatter. Don't bother with any fuel additives or aerosol sprays for cleaning the IM and ports - I tried them and they make no difference at all. The only way to clean these areas is to have the IM removed for chemical cleaning, and to walnut blast the ports. __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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