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Skyactiv Intake Valve Deposits #4719538
04/07/18 02:09 PM
04/07/18 02:09 PM
Joined: Nov 2002
Posts: 30,679
NJ
buster Offline OP
buster  Offline OP
Joined: Nov 2002
Posts: 30,679
NJ
I haven't paid much attention to whether the Skyactiv engines are prone to intake valve deposits. I've heard many say they are, and even noticed the BG service offered by the dealerships, but I've yet to actually see proof there is an issue with the Skyactiv engines.

I've used M1 and top tier gas in my car and it runs like it did when I first bought it. The car has 51,400 miles on it.

Mazda claims to have solved this issue. I'm not on any of the Mazda forums to get a better sense of the reality of the situation.

http://www.motoiq.com/MagazineArticles/I...Technology.aspx



Re: Skyactiv Intake Valve Deposits [Re: buster] #4719555
04/07/18 02:21 PM
04/07/18 02:21 PM
Joined: May 2010
Posts: 2,025
Illinois, U.S.A
RamFan Offline
RamFan  Offline
Joined: May 2010
Posts: 2,025
Illinois, U.S.A
I've owned two, 2.5l SkyActiv engines. Neither have had deposit issues. I frequent Mazdas247 and have not seen reports of deposits. It seems as though Mazda solved the issue for their engines, but, most other manufacturers have also.


06 Monte Carlo LT
+3.9l V6 - 191k - DuraBlend 10w30 - EcoGard Synthetic - OLM
16.5 CX-5 Touring
+2.5l I4 - 48k - SynPower w/ Maxlife 0w20 - PureOne - 8k/1yr
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719556
04/07/18 02:22 PM
04/07/18 02:22 PM
Joined: Jan 2009
Posts: 2,377
wi
dave123 Offline
dave123  Offline
Joined: Jan 2009
Posts: 2,377
wi
110 thousand miles on my skyactiv runs like day I bought it 5k with mobil1 nothing else special done. Absolutely love theat engine 2.0l

Re: Skyactiv Intake Valve Deposits [Re: buster] #4719557
04/07/18 02:22 PM
04/07/18 02:22 PM
Joined: Mar 2017
Posts: 5,394
Soviet State of Washington
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,394
Soviet State of Washington
It seems that Mazda has taken steps to reduce buildups and fuel dilution. I havenít heard of major issues with their engines like the other manufacturers have. The linked article is from 2011 so a lot of changes have occurred along the way. Starting with 2017 the engines had redesigned pistons and rings plus offset crankshaft.


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: Skyactiv Intake Valve Deposits [Re: buster] #4719559
04/07/18 02:23 PM
04/07/18 02:23 PM
Joined: Jun 2005
Posts: 11,319
Santa Barbara, CA
bdcardinal Offline
Happy Birthday bdcardinal  Offline
Joined: Jun 2005
Posts: 11,319
Santa Barbara, CA
I haven't noticed anything with any cars that come through service.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719601
04/07/18 03:12 PM
04/07/18 03:12 PM
Joined: Sep 2004
Posts: 21,626
Orlando, FL
Mr Nice Offline
Mr Nice  Offline
Joined: Sep 2004
Posts: 21,626
Orlando, FL
Iím in the market to buy a new Mazda 3 hatchback, I was wondering about DI deposits...


Re: Skyactiv Intake Valve Deposits [Re: buster] #4719606
04/07/18 03:20 PM
04/07/18 03:20 PM
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
webfors Offline
webfors  Offline
Joined: Jun 2006
Posts: 4,972
Great White North.. eh
One way to find out for sure. Grab your wrench and camera!


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719798
04/07/18 06:22 PM
04/07/18 06:22 PM
Joined: Feb 2014
Posts: 2,285
Kansan,1911 45ACP fan
Marco620 Offline
Marco620  Offline
Joined: Feb 2014
Posts: 2,285
Kansan,1911 45ACP fan
Use toptier fuel, synthetic oil and a regiment of CRC GDI throttle cleaner and Gumout all in One. No to Techron; its PEA based but lacks a friction modifier and does nothing for ethanol protection.


15' Civic 179k.0w20 Redline/Archoil9100,Eibach,Yokohama/Borla Exhaust/Tein Suspension/Fu7317/Redline Si-1
Right to work state proud. Non union household
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719885
04/07/18 07:49 PM
04/07/18 07:49 PM
Joined: Apr 2016
Posts: 841
KS
FordBroncoVWJeta Offline
FordBroncoVWJeta  Offline
Joined: Apr 2016
Posts: 841
KS
Usually of all the cars I had come through Walmart, the only ones that I can tell that have fuel dilution issues is Honda. I haven't messed with that many Honda's, but the ones that always smell like gas in the oil are the 2015-16 2.4 engines from Honda. I havent dealt with any of the other new Honda engines though. Even the one in my signature smells like a gas tank in the crankcase.

My 17 Jetta also has DI, but it doesn't smell like a gas station. I guess Honda wasn't producing "Honda Quality" with those engines. shrug


17 Volkswagen Jetta 1.4T
15 Honda CRV 2.4
12 Volkswagen Jetta 2.0
01 Pontiac Sunfire 2.2
Re: Skyactiv Intake Valve Deposits [Re: PimTac] #4719931
04/07/18 08:25 PM
04/07/18 08:25 PM
Joined: May 2010
Posts: 9,045
North Carolina
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,045
North Carolina
Originally Posted By: PimTac
It seems that Mazda has taken steps to reduce buildups and fuel dilution. I havenít heard of major issues with their engines like the other manufacturers have. The linked article is from 2011 so a lot of changes have occurred along the way. Starting with 2017 the engines had redesigned pistons and rings plus offset crankshaft.



Probably like you, i researched and did not find much in the way of intake valve issues with the skyactiv engines. Thats one of the reasons i went with mazda.

I'd more interested in fuel dilution that intake valve build up. Less data/info out there on fuel dilution.


13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4720125
04/08/18 03:10 AM
04/08/18 03:10 AM
Joined: Aug 2004
Posts: 19,988
CA
The Critic Offline
The Critic  Offline
Joined: Aug 2004
Posts: 19,988
CA
In theory, all DI engines will be prone to intake valve deposits. However, is being "managed" thru other techniques. If you are concerned about deposits, you will need to remove the intake manifold and inspect the intake valves using an inspection camera. Anything else is just a guess.


2011 Toyota Prius - 173k - Various 0W-20 (Brew)
2007 Honda Accord 2.4 - 131K - Mobil 1 EP HM 5W-30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4720250
04/08/18 07:48 AM
04/08/18 07:48 AM
Joined: Dec 2003
Posts: 9,795
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,795
Florida, Cape Coral
Might be possible to rotate the engine so the intake valves are open and inspect through the spark plug hole? Ed


CX5 Touring 2.5L :-)
Re: Skyactiv Intake Valve Deposits [Re: buster] #4721910
04/09/18 04:56 PM
04/09/18 04:56 PM
Joined: Nov 2002
Posts: 30,679
NJ
buster Offline OP
buster  Offline OP
Joined: Nov 2002
Posts: 30,679
NJ
Thanks for the feedback. I will continue to not worry about this. grin



Re: Skyactiv Intake Valve Deposits [Re: buster] #4722153
04/09/18 08:50 PM
04/09/18 08:50 PM
Joined: Aug 2010
Posts: 1,015
pa
benjy Offline
benjy  Offline
Joined: Aug 2010
Posts: 1,015
pa
hoping for my GF's sake her DI 2.5L 2013 Malibu continues to be carbon free, 50,xxx miles + ONLY a new radiator SO FAR!!!

Re: Skyactiv Intake Valve Deposits [Re: buster] #4813313
07/13/18 03:33 PM
07/13/18 03:33 PM
Joined: Sep 2004
Posts: 21,626
Orlando, FL
Mr Nice Offline
Mr Nice  Offline
Joined: Sep 2004
Posts: 21,626
Orlando, FL
I'm guessing an Italian tune up won't help.

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