Recent Topics
New Tires for the Old Chevy!
by dogememe. 12/14/18 05:09 PM
Back to Basics II
by MolaKule. 12/14/18 04:31 PM
"SG(+)" 15w40 or better oil 1987 BBC 454
by F239141. 12/14/18 03:52 PM
All Mazda 3’s have bad OCV’s?
by buster. 12/14/18 03:44 PM
Bad cylinder 3 misfire.
by Hemispheres. 12/14/18 02:49 PM
Small leak at toilet base - bad wax ring?
by Oro_O. 12/14/18 02:38 PM
Ok I take it back about Keurig
by StevieC. 12/14/18 02:29 PM
Edge 5W-30 7.9k miles '13 F150 5.0
by dustyroads. 12/14/18 02:11 PM
Stick with WSS-M2C946-A?
by BlueFog. 12/14/18 01:42 PM
How engine capacity affects fuel consumption?
by NICAT. 12/14/18 01:12 PM
Pep Boys
by Zee09. 12/14/18 12:41 PM
How early in engines life can I start to extend OCI
by Doublehaul. 12/14/18 12:33 PM
EFB and AGM batteries charge faster?
by slybunda. 12/14/18 11:20 AM
97.5 Regal GS climate control illumination
by 71Chevyguy. 12/14/18 11:04 AM
Cool train site for Canadians
by Papa Bear. 12/14/18 10:09 AM
Putting together a groups 3/4/5 synthetic list
by MrWideTires. 12/14/18 10:02 AM
VW Atlas V6 Oil
by motech. 12/14/18 09:32 AM
Great shakes, it's Yahtzee... or a Taurus
by redhat. 12/14/18 09:03 AM
Newest Members
wsalopek, jcr1293, maxwellk, BlueFog, Frank_G35
66682 Registered Users
Who's Online Now
88 registered members (another Todd, andyd, 2oldtommy, Al, 77GrandPrix, 92saturnsl2, 9 invisible), 1,844 guests, and 39 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Most Online2,553
Oct 27th, 2018
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Few oil ? #4703705
03/22/18 08:25 PM
03/22/18 08:25 PM
Joined: Feb 2008
Posts: 1,065
Camprunner Offline OP
Camprunner  Offline OP
Joined: Feb 2008
Posts: 1,065
Just a few questions ..... Does excessive idling cause oil to get diluted with fuel? And second why do some direct injected engines have a tendency to dilute the oil with fuel? What about a DI motor makes it prone to fuel dilution?

Re: Few oil ? [Re: Camprunner] #4703714
03/22/18 08:39 PM
03/22/18 08:39 PM
Joined: May 2012
Posts: 1,836
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline
Joined: May 2012
Posts: 1,836
The land of USA-made Subies!
1. Yes, in almost all cases. Insufficient oil temps prevent the fuel from evaporating and getting sucked out through PCV. 2. Injection pressures can cause fuel to leak past the combustion rings and contaminate the oil.

Interestingly, even on high diluters like the Ford EcoBoost engines, there have not been the catastrophic results predicted by people who are shouting from the rooftops about fuel dilution. It appears if you go by the OLM or sensible OCIs, fuel dilution is not the death sentence that old logic would have you believe.

Re: Few oil ? [Re: Camprunner] #4704071
03/23/18 08:54 AM
03/23/18 08:54 AM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
Fuel dilution is just an active form of "Solvent Refining" like good old Grp I oils. If there is not much to create new oils from the initial fill (?), there should not be to much issue other than grade/viscosity loss due to thinning ... And we all know that 0W-20's work for many engines, so starting with a 40 should give you a lot of headroom laugh

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

BOB IS THE OIL GUY® Powered by UBB.threads™