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Oil Additives for GDI engines #5437831 05/24/20 07:21 PM
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Drew99GT Offline OP
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Might there be a market for oil additives that can help reduce carbon on intake valves? Since its the oily vapors that get sucked through the PCV system that bake onto the valves, if one were to use an oil additive that had high cleaning ability, could that potentially clean and prevent intake valve deposits?!? Just thinking hypothetically!

Specifically I'm looking at using Risolone engine treatment (in the oil) in my 2016 CX-5.

What other engine oil additives would work best to help prevent intake valve deposits and potentially actually clean them??

I sent an email to Rislone, will report back.

Thanks!

Re: Oil Additives for GDI engines [Re: Drew99GT] #5437839 05/24/20 07:26 PM
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UG_Passat Offline
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None.

Low SAPS oils slow the formation of deposits on the valves.


2016 VW Tiguan
Re: Oil Additives for GDI engines [Re: UG_Passat] #5437850 05/24/20 07:31 PM
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Marco620 Offline
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Originally Posted by UG_Passat
None.

Low SAPS oils slow the formation of deposits on the valves.


Agree! I would keep PEA based fuel additives around and low ethanol content fuel. The most harm is done by short trips,cold weather and not getting up to operating temperature which can take 20 miles/minutes.


15' Civic r18, 344,000 mi M1 5w30(3qt)/Redline 5w30(1qt),Castrol CVT Fluid,Redline Si-1
Doberman Whisperer! Honda/Acura nerd; detest ethanol,wind,"green" ,solar & vegan.


Re: Oil Additives for GDI engines [Re: Marco620] #5437852 05/24/20 07:33 PM
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Rand Offline
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Originally Posted by Marco620
I would keep PEA based fuel additives around and low ethanol content fuel.

What does ethanol have to do with valve deposits on GDI engines?


2019 Jeep Cherokee Trailhawk 2.0T
2020 Hyundai Elantra "Value Edition"
Re: Oil Additives for GDI engines [Re: Drew99GT] #5437864 05/24/20 07:38 PM
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buster Offline
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Not that I'm aware of but here are the suggested things you can do to help mitigate intake valve deposits (opinions may vary):

Use an oil that is highly resistant to oxidation.
Avoid short trips as much as possible.
Take long highway trips periodically and get the engine hot. It's been found that high heat helps burn off and prevent IVD's.

Low Noack and lower SAPS are commonly suggested, however, that may not be the case.

I'm using Mobil 1 EP right now - PAO/AN, Noack 10%, SA .8.
I have some AP which is PAO/AN, Noack 8.9%, SA .8.

High Performance Lubricants (site sponsor) makes really good oils and they claim: "Formulated with specifically chosen esters which helps to minimize intake valve deposits, maintain a clean engine and maintain elastomer compatibility."

In time I will be using them.

https://www.advlubrication.com/collections/automotive-lubricants/products/passenger-car-motor-oil


2020 - Mazda CX-30 - Mobil 1 EP 0w20
2019 - Subaru Impreza - Dealer Oil
Re: Oil Additives for GDI engines [Re: Rand] #5437870 05/24/20 07:43 PM
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Marco620 Offline
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Originally Posted by Rand
Originally Posted by Marco620
I would keep PEA based fuel additives around and low ethanol content fuel.

What does ethanol have to do with valve deposits on GDI engines?



https://www.thetruthaboutcars.com/2012/05/ask-an-engineer-gdi-problems-in-a-nutshell/


15' Civic r18, 344,000 mi M1 5w30(3qt)/Redline 5w30(1qt),Castrol CVT Fluid,Redline Si-1
Doberman Whisperer! Honda/Acura nerd; detest ethanol,wind,"green" ,solar & vegan.


Re: Oil Additives for GDI engines [Re: Drew99GT] #5437876 05/24/20 07:49 PM
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buster Offline
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SAVAGEGEESE:
How is carbon build up managed and additional blow created from turbo associated with DI?

DAVE COLEMAN:
Carbon buildup on DI intake valves has two contributors. The oil itself getting on the valves, and the valves being at a temperature that promotes the formation of hard deposits.

We've dramatically reduced the oil in the intake stream compared to our last DI Turbo through several measures. First, oil blowing past turbo seals directly into the intake stream has been reduced with better turbo oil seals and lower oil pressure in the turbo itself. Actual blow-by has been reduced across the board with SKYACTIV engines by improving the roundness of the cylinder bores through improved analysis of casting, machining and assembly stresses that can slightly warp the bores. Taking this into account in the design process has given us much better blow-by performance.

Finally, the realization of the sensitivity to intake valve temperature has allowed us to design the cylinder head structure, cooling system and calibration to manage intake valve temperatures to prevent carbon buildup.

To eliminate the problem of intake valve deposits that plague current direct gasoline injection engines, the engineers at Mazda determined that deposits are formed when intake valve temperatures fall below 400 degrees C. Measures were taken so that the intake valve would operate above this point to reduce deposit formation.

One of the biggest issues with direct injection engines is a build up of deposits on the intake valve. Mazda determined that this was largely due to the intake valve being too cool. A lot of analysis went into designing the heat paths away from the valves to keep them at the proper temperature to avoid deposit formation.


2020 - Mazda CX-30 - Mobil 1 EP 0w20
2019 - Subaru Impreza - Dealer Oil
Re: Oil Additives for GDI engines [Re: Drew99GT] #5437905 05/24/20 08:33 PM
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sloinker Offline
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maybe induced methanol in the airbox/turbo compressor path is a cheap way to help.


'16 Tiguan TSI Vaico 5W40
'15 VW Golf TDI Red Line 5W30 Euro
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Re: Oil Additives for GDI engines [Re: buster] #5437952 05/24/20 09:40 PM
Joined: Apr 2019
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js1956 Offline
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Originally Posted by buster
Not that I'm aware of but here are the suggested things you can do to help mitigate intake valve deposits (opinions may vary):

Use an oil that is highly resistant to oxidation.
Avoid short trips as much as possible.
Take long highway trips periodically and get the engine hot. It's been found that high heat helps burn off and prevent IVD's.

Low Noack and lower SAPS are commonly suggested, however, that may not be the case.

I'm using Mobil 1 EP right now - PAO/AN, Noack 10%, SA .8.
I have some AP which is PAO/AN, Noack 8.9%, SA .8.

High Performance Lubricants (site sponsor) makes really good oils and they claim: "Formulated with specifically chosen esters which helps to minimize intake valve deposits, maintain a clean engine and maintain elastomer compatibility."

In time I will be using them.

https://www.advlubrication.com/collections/automotive-lubricants/products/passenger-car-motor-oil


I would like to try this one in my Golf, but can't find PDS or VOA anywhere.

[Linked Image]




2015 VW Golf Mk7 2dr HB Man 1.8 TSI S

Re: Oil Additives for GDI engines [Re: Marco620] #5437958 05/24/20 09:54 PM
Joined: Apr 2019
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js1956 Offline
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Originally Posted by Marco620
Originally Posted by Rand
Originally Posted by Marco620
I would keep PEA based fuel additives around and low ethanol content fuel.

What does ethanol have to do with valve deposits on GDI engines?



https://www.thetruthaboutcars.com/2012/05/ask-an-engineer-gdi-problems-in-a-nutshell/


I read some articles online that ethanol contributes to corrosion and is also problematic in IVD's.
Whether it's true or not I don't know.
I've been using clear gas (ethanol free) since I bought my Golf and hoping for the best.


2015 VW Golf Mk7 2dr HB Man 1.8 TSI S

Re: Oil Additives for GDI engines [Re: Marco620] #5438022 05/24/20 11:36 PM
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LotI Offline
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Originally Posted by Marco620
Originally Posted by Rand
Originally Posted by Marco620
I would keep PEA based fuel additives around and low ethanol content fuel.

What does ethanol have to do with valve deposits on GDI engines?



https://www.thetruthaboutcars.com/2012/05/ask-an-engineer-gdi-problems-in-a-nutshell/

This 8 year old article you reference says nothing about ethanol contributing to IVD. It talks about corrosion. Ethanol burns cleaner than gasoline anyway.

I think engineers know more now.


03 Honda Interceptor
11 Kawasaki KLR 650
12 Ford E450
19 Buick Regal TourX
Re: Oil Additives for GDI engines [Re: sloinker] #5438057 05/25/20 02:50 AM
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Posts: 4,008
Marco620 Offline
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Originally Posted by sloinker
maybe induced methanol in the airbox/turbo compressor path is a cheap way to help.


Did Saab play with methanol in their cars in the 80s??


15' Civic r18, 344,000 mi M1 5w30(3qt)/Redline 5w30(1qt),Castrol CVT Fluid,Redline Si-1
Doberman Whisperer! Honda/Acura nerd; detest ethanol,wind,"green" ,solar & vegan.


Re: Oil Additives for GDI engines [Re: LotI] #5438058 05/25/20 02:53 AM
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Marco620 Offline
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Originally Posted by LotI
Originally Posted by Marco620
Originally Posted by Rand
Originally Posted by Marco620
I would keep PEA based fuel additives around and low ethanol content fuel.

What does ethanol have to do with valve deposits on GDI engines?



https://www.thetruthaboutcars.com/2012/05/ask-an-engineer-gdi-problems-in-a-nutshell/

This 8 year old article you reference says nothing about ethanol contributing to IVD. It talks about corrosion. Ethanol burns cleaner than gasoline anyway.

I think engineers know more now.


Ethanol can't burn cleaner as it has more voc than regular gasoline. If it burns cleaner it's because it does not completely burn and leaves behind a nasty residue. Let's also mention all the procedures going into making it. Not a reliable source, great for hand sanitizer though.


15' Civic r18, 344,000 mi M1 5w30(3qt)/Redline 5w30(1qt),Castrol CVT Fluid,Redline Si-1
Doberman Whisperer! Honda/Acura nerd; detest ethanol,wind,"green" ,solar & vegan.


Re: Oil Additives for GDI engines [Re: Drew99GT] #5438161 05/25/20 08:01 AM
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incognito_2u Offline
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Originally Posted by Drew99GT
Might there be a market for oil additives that can help reduce carbon on intake valves? Since its the oily vapors that get sucked through the PCV system that bake onto the valves, if one were to use an oil additive that had high cleaning ability, could that potentially clean and prevent intake valve deposits?!? Just thinking hypothetically!


Wasn’t “Valvoline Modern Engine” oil designed specifically to address that issue?


2006 Jeep Commander 3.7 V6 -116k (M1EP5W30/XG3600)
2006 Toyota Corolla 1.8 VVTi -88k (M1EP5W30/XG3600)
1999 Toyota Corolla 1.8 -92k (PUP5W30/XG4386)
1998 Toyota Corolla 1.8 -68k (VME5W30/XG3600)
Re: Oil Additives for GDI engines [Re: Drew99GT] #5438174 05/25/20 08:22 AM
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ChrisD46 Offline
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10% Ethanol in gasoline has one benefit : It is a great fuel injector cleaner .(that's it though as far as I know) .


'17 Hyundai Sonata 2.4L GDI 5W30 PUP / Fram Ultra #9688
'10 Hyundai Elantra 2.0L 5W30 (50%) / 5W20 (50%) QSUD / Fram Ultra #9688
'07 Kia Sedona 3.8L 5W30 Castrol EP / Fram Ultra #9999
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