Fuel additive/cleaner

jeff3 · 05-15-2023, 10:18 AM

Hi,

Can anyone recommend a good fuel additive for my 78k mile 420d? Do you think it would help with mpg and engine noise etc?

Thanks,
Jeff

Watsey · 05-15-2023, 12:35 PM

Millers Oils and Archoil both have good reputations. I've used both and they both noticeably reduced engine harshness with my 30d.

These types of additives tend to have very similar formulations, so as long as it's a well known brand they should be fine.

ssf556 · 05-15-2023, 05:55 PM

I have been using Stanadyne Performance 8oz for years in a 2008 Jeep CRD, 2012 Ram Cummins and now a 2018 328d. The bottle size is convenient and the bottle does not leak when you use only half.

https://www.amazon.com/Performance-F...7-857e17e03685

Pepi · 05-15-2023, 06:25 PM

I too can vouch for Standyne. My 328d had a stumble when the engine was started 1st thing in the morning. Asked a 335d friend of mine, and that’s what he recommended. Cleared up the stumble immediately. Months later the stumble resurfaced and Standyne was used again. Haven’t had an driveability issue since.

ReiChr · 05-25-2023, 03:56 AM

It would be nice if anyone had any before/after pictures.
I can not imagine if this additives really help anything. People always state it helps with engine sounds. But maybe thats just a psychological thing.

Sometimes i buy premium diesel from gas station and right after driving out of the gas station it feels like the engine runs smoother

But that must be placebo

05-15-2023, 10:18 AM	#1
jeff3 New Member 0 Rep 6 Posts Drives: 4 series Join Date: Jun 2020 Location: Scotland iTrader: (0)	Fuel additive/cleaner Hi, Can anyone recommend a good fuel additive for my 78k mile 420d? Do you think it would help with mpg and engine noise etc? Thanks, Jeff
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05-15-2023, 12:35 PM	#2
Watsey Major General 6399 Rep 8,488 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	Millers Oils and Archoil both have good reputations. I've used both and they both noticeably reduced engine harshness with my 30d. These types of additives tend to have very similar formulations, so as long as it's a well known brand they should be fine. __________________ 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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05-15-2023, 05:55 PM	#3
ssf556 Private First Class 38 Rep 154 Posts Drives: 2018 328d Join Date: Mar 2022 Location: SC iTrader: (0)	I have been using Stanadyne Performance 8oz for years in a 2008 Jeep CRD, 2012 Ram Cummins and now a 2018 328d. The bottle size is convenient and the bottle does not leak when you use only half. https://www.amazon.com/Performance-F...7-857e17e03685 __________________ 2018 328d
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05-15-2023, 06:25 PM	#4
Pepi New Member 8 Rep 25 Posts Drives: 328d, 540iT, 328i, 750iL Join Date: Jan 2023 Location: West Coast iTrader: (0)	I too can vouch for Standyne. My 328d had a stumble when the engine was started 1st thing in the morning. Asked a 335d friend of mine, and that’s what he recommended. Cleared up the stumble immediately. Months later the stumble resurfaced and Standyne was used again. Haven’t had an driveability issue since.
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05-25-2023, 03:56 AM	#5
ReiChr New Member 3 Rep 11 Posts Drives: BMW F31 318d Join Date: May 2023 Location: Bavaria iTrader: (0)	It would be nice if anyone had any before/after pictures. I can not imagine if this additives really help anything. People always state it helps with engine sounds. But maybe thats just a psychological thing. Sometimes i buy premium diesel from gas station and right after driving out of the gas station it feels like the engine runs smoother But that must be placebo
	Appreciate 0 Quote