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Oil color different cool versus hot? #5078402
04/18/19 02:56 AM
04/18/19 02:56 AM
Joined: Oct 2015
Posts: 3,004
Balearic Islands , Spain
FordCapriDriver Offline OP
FordCapriDriver  Offline OP

Joined: Oct 2015
Posts: 3,004
Balearic Islands , Spain
Might sounds like a dumb question but it's something i had not realised until yet smirk2

When i pull the dipstick cold on my 1988 Escort, the oil is a nice amber / brown colour.

However yesterday i pulled it about 15min. after shutting the engine off and the oil colour is nearly absolutely clear.

The oil has less than 2000km on it.
I take this is normal???

Last edited by FordCapriDriver; 04/18/19 02:57 AM.

1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.
1988 Ford Escort XR3i Cabrio, - Shell Rimula R4X 15W-40
G40 Si-OAT coolant in both


Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5078404
04/18/19 03:04 AM
04/18/19 03:04 AM
Joined: Mar 2017
Posts: 258
South Wales, UK
Bailes1992 Offline
Bailes1992  Offline

Joined: Mar 2017
Posts: 258
South Wales, UK
Always noticed his myself. Just assumed its because when the engine has been running the oil is a bit thinner.


'17 Volvo V40 D3 Geartronic - Castrol Edge 5w30 LL
'19 Dacia Sandero 0.9T - Shell Helix Ultra 5w40
'96 LR Defender 300TDi - Morris Lubricants HD4 15w40
'12 BMW 320d Sport Auto - Fuchs GT1 5w40
Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5078412
04/18/19 03:40 AM
04/18/19 03:40 AM
Joined: Dec 2002
Posts: 43,014
'Stralia
Shannow Offline
Shannow  Offline

Joined: Dec 2002
Posts: 43,014
'Stralia
Yes, I belive that the thinner oil pulls a thinner layer on the dipstick, and results in a lighter looking dipstick.


If it's the truth....it can handle the pressure !!!
Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5078422
04/18/19 04:16 AM
04/18/19 04:16 AM
Joined: Mar 2013
Posts: 860
UK
weasley Offline
weasley  Offline

Joined: Mar 2013
Posts: 860
UK
^^^ This ^^^


2017 SEAT Leon 1.4 EcoTSI 150 FR Technology DSG
2018 Volvo XC60 D4
2011 KTM 990 SMT
Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5078426
04/18/19 04:41 AM
04/18/19 04:41 AM
Joined: Oct 2015
Posts: 3,004
Balearic Islands , Spain
FordCapriDriver Offline OP
FordCapriDriver  Offline OP

Joined: Oct 2015
Posts: 3,004
Balearic Islands , Spain
Kind of makes sense....


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.
1988 Ford Escort XR3i Cabrio, - Shell Rimula R4X 15W-40
G40 Si-OAT coolant in both


Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5078571
04/18/19 08:32 AM
04/18/19 08:32 AM
Joined: Sep 2005
Posts: 14,678
Canada
addyguy Offline
addyguy  Offline

Joined: Sep 2005
Posts: 14,678
Canada
Oil is always darker when colder.


2010 Kia Soul 2U - 2.0L I-4, auto; 142k miles.
Castrol GTX HM 5W-30, STP blue bottle; Fram TG 9688.

2009 Pontiac G5 - 2.2 I-4, auto, 121k miles.
Oil/filter TBD
Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5078708
04/18/19 11:11 AM
04/18/19 11:11 AM
Joined: Sep 2016
Posts: 200
MN
Tman220 Offline
Tman220  Offline

Joined: Sep 2016
Posts: 200
MN
You would think an oil site like this, obsessed with viscosity etc etc would realize oil will appear darker on a dipstick when cold, compared to when it is warm because of a thicker layer of oil clinging to the dipstick when cold...


2012 Regal GS Turbo PP 5w30 90k
1994 Camaro Z28 LT1 355 CI, 430 RWHP PP 5W30 165k
2005 GMC Sierra 1500 5.3 160k
2004 Civic LX M5 178k
2007 Camry 2.4 232k
2016 Victory Vegas
Re: Oil color different cool versus hot? [Re: FordCapriDriver] #5079368
04/18/19 11:33 PM
04/18/19 11:33 PM
Joined: Jul 2017
Posts: 910
WA
OilUzer Offline
OilUzer  Offline

Joined: Jul 2017
Posts: 910
WA
Does that mean that the "oil site" can not ask any questions since everything has been discussed ... and we should be able to solve any problem since all underlying facts may have been discussed in one form or another?

If that's the case, most websites will be out of biz shocked2

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