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Do fuel system cleaners adversely affect your oil? #5209380 09/10/19 04:12 PM
Joined: Dec 2014
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Ed_Flecko Offline OP
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I like the Berryman B-12 Chemtool Carburetor, Fuel System and Injector Cleaner product (https://bit.ly/2YIyQFc) and I see it contains Toluene, Acetone, Methanol, Methyl Ethyl Ketone, Butoxyethanol, and Propanol (https://bit.ly/2lPpfJR).

I've seen enough UOA posted on BITOG to know that *sometimes* fuel ends up in your oil. If I use this product from time to time to keep my injectors clean, do you think it might adversely my oil, if any of it ends up there (by sneaking past the rings, for example) ?

Thank you,
Ed


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Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209382 09/10/19 04:16 PM
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csandste Offline
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Use Techron without worry, but B-12 has a reputation for being fairly strong. Maybe right before an oil change. Never used it so others will give you some customer experience.


2017 Kia Soul Plus-- VWB 5w30 65,000 miles
Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209403 09/10/19 04:37 PM
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Sayjac Offline
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I don't know. I wouldn't use one immediately after an oil change. I try to use it sometime in middle to end of oci, closer to latter. That said, I have no proof using one right after an OC would make any difference.

Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209518 09/10/19 07:15 PM
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Mad_Hatter Offline
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If enough of it (it's solvents) makes it past the rings it can lower viscosity and flash point.

Berrymans a good cleaner with a fair amount of solvents. PEA is going to be the best cleaner for combustion chamber deposits but Berrymans will clean up valves (on PI engines) and FI just fine.

Last edited by Mad_Hatter; 09/10/19 07:20 PM.
Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209521 09/10/19 07:20 PM
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andyd Offline
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The ingredients are very aromatic and will be drawn off by the PCV . That said I use Berryman's in my OPE, not the Camrys grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209549 09/10/19 07:49 PM
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doitmyself Offline
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We have the following thread posted by Molakule: https://www.bobistheoilguy.com/foru...-based-fuel-system-additives#Post3270798

"Increases in hydrocarbon loads not only exit the exhaust stream, but can also enter the oil. It is always a good idea to change the oil after using a strong fuel system cleaner. "

What is the metric for determining what "strong" means?

Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209550 09/10/19 07:52 PM
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spasm3 Offline
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I've used b-12 and techron without worry in all my cars up till owning a DI engine. With the uoa that showed excessive fuel in the oil in colder weather. I will not run b-12 or techron in the mazda except a tank just before an oil change, and only in the summer. Not to say B-12 and techron are not good products, but i dont want them in the oil. In my mpfi engines i don't worry about it and i will use them when ever.


13 elantra 78k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 12300 miles m1 0w30
Re: Do fuel system cleaners adversely affect your oil? [Re: Ed_Flecko] #5209635 09/10/19 09:14 PM
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CT8 Offline
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Does most of the stuff in the B12 burn in the combustion chamber and evaporate in the oil ?


2015 F150 2.7
2018 F350 6.2
Re: Do fuel system cleaners adversely affect your oil? [Re: CT8] #5209662 09/10/19 09:46 PM
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Mad_Hatter Offline
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Originally Posted by CT8
Does most of the stuff in the B12 burn in the combustion chamber and evaporate in the oil ?

I'd think if fuel can slip past your rings it's a good bet the Berrymans in the fuel is making it's way into the crankcase as well.

The lightest constituents will evaporate before the heaviest. So I would guess it depends on how long you keep the oil at operating temp?🤔

Re: Do fuel system cleaners adversely affect your oil? [Re: CT8] #5210048 09/11/19 11:36 AM
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Linctex Offline
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Originally Posted by CT8
Does most of the stuff in the B12 burn in the combustion chamber and evaporate in the oil ?


Burn up.

I'd have a SERIOUSLY hard time believing any amount of B-12 is going to make it into the crankcase.

That stuff evaporates FAST!


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
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