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Skyactiv Intake Valve Deposits #4813127
07/13/18 10:45 AM
07/13/18 10:45 AM
Joined: Nov 2002
Posts: 30,834
NJ
buster Offline OP
buster  Offline OP
Joined: Nov 2002
Posts: 30,834
NJ
I may have started a thread on this before, but I can't locate it. Has anyone that has a Skyactiv engine, or know someone that does, had any intake valve deposits? It does not seem to be an issue with these engines.

I have a 2015 (2.0 MT) and have only used Mobil 1, which has a SA of .8 and a NOACK of 10%. I have not taken a look but the car runs like new with 53,000 miles on it.

Re: Skyactiv Intake Valve Deposits [Re: buster] #4813130
07/13/18 10:53 AM
07/13/18 10:53 AM
Joined: Mar 2017
Posts: 6,068
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,068
...
From everything I have heard or read, the Mazda SkyActiv engines seem to handle fuel dilution and deposits better than other GDI engines. I have no actual experience other than owning the car in my sig but the miles are pretty minimal at this point.


2017 Mazda CX-5 GT.

Valvoline Modern Engine 0w20
Mobil 1 EP 108A
Re: Skyactiv Intake Valve Deposits [Re: buster] #4813135
07/13/18 10:57 AM
07/13/18 10:57 AM
Joined: Nov 2002
Posts: 30,834
NJ
buster Offline OP
buster  Offline OP
Joined: Nov 2002
Posts: 30,834
NJ
Thanks PimTac. That's what I've heard too.

Re: Skyactiv Intake Valve Deposits [Re: buster] #4813161
07/13/18 11:40 AM
07/13/18 11:40 AM
Joined: Dec 2003
Posts: 9,876
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,876
Florida, Cape Coral
The three UOA on my CX5 2014 2.5 liter showed no fuel dilution over ~ 0.2%

Last edited by Eddie; 07/13/18 11:41 AM.

CX5 Touring 2.5L :-)
Re: Skyactiv Intake Valve Deposits [Re: buster] #4813176
07/13/18 11:59 AM
07/13/18 11:59 AM
Joined: Oct 2002
Posts: 36,475
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,475
Great Lakes
Originally Posted By: buster
I may have started a thread on this before, but I can't locate it.

Here you go:
https://www.bobistheoilguy.com/forums/ub...its#Post4719538



'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (PUP 0W-40 SRT)
Re: Skyactiv Intake Valve Deposits [Re: buster] #4813206
07/13/18 12:40 PM
07/13/18 12:40 PM
Joined: Nov 2002
Posts: 30,834
NJ
buster Offline OP
buster  Offline OP
Joined: Nov 2002
Posts: 30,834
NJ
Thanks QP!

Re: Skyactiv Intake Valve Deposits [Re: buster] #4813463
07/13/18 06:32 PM
07/13/18 06:32 PM
Joined: Mar 2012
Posts: 1,327
San Antonio, TX
E150GT Offline
E150GT  Offline
Joined: Mar 2012
Posts: 1,327
San Antonio, TX
So at 22k miles my car started pinging pretty bad. I took it in and they said the intake was full of oil and the valves were dirty. They recommended a valve cleaning. I made them do it under warranty. Made no difference. I switched to 93 octane Got almost 60k now.


1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: Skyactiv Intake Valve Deposits [Re: E150GT] #4813472
07/13/18 06:45 PM
07/13/18 06:45 PM
Joined: May 2002
Posts: 21,056
Oakville, Ontario
Patman Offline
Patman  Offline
Joined: May 2002
Posts: 21,056
Oakville, Ontario
Originally Posted By: E150GT
So at 22k miles my car started pinging pretty bad. I took it in and they said the intake was full of oil and the valves were dirty. They recommended a valve cleaning. I made them do it under warranty. Made no difference. I switched to 93 octane Got almost 60k now.


That doesn't seem right to me, you shouldn't have to run 93 octane in order to avoid pinging when that car calls for 87 octane. Mazda should fix this properly for you.


2018 Corvette (M1 ESP Formula 5w30 & NAPA Gold)
2006 Civic EX Coupe (PUP 5w20 & Fram Ultra)
2010 BMW 328i X-Drive (GC 0w40 & Fram Ultra)

Re: Skyactiv Intake Valve Deposits [Re: buster] #4813526
07/13/18 08:10 PM
07/13/18 08:10 PM
Joined: Apr 2012
Posts: 9,700
Kendall, FL
wemay Offline
wemay  Offline
Joined: Apr 2012
Posts: 9,700
Kendall, FL
Mazda is one brand i haven't heard or read of any large scale GDi related issues.


18 Sportage LX: STP S2808ML
13 SFS 2.0T: FRAM XG9688
For the foreseeable future (👍AAP sale):
PP, PPHM and MSS 10w30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4813747
07/14/18 07:24 AM
07/14/18 07:24 AM
Joined: May 2002
Posts: 21,056
Oakville, Ontario
Patman Offline
Patman  Offline
Joined: May 2002
Posts: 21,056
Oakville, Ontario
Since we found the duplicate thread, I'm going to close this one.


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