Oil Change Warm or Cold

Start oil threads here so they can be ignored and/or ridiculed by most of us (except for those hardcore few that live for that kinda stuff).
Forum rules
Here's the place for you to debate what oil is best. Post your oil related topics her so we don't clutter up the other sections. Most people avoid oil threads like the plague.
kevinkrenik
Comrade
Comrade
Posts: 26
Joined: Mon Apr 17, 2017 12:45 pm

Oil Change Warm or Cold

Post by kevinkrenik » Tue May 02, 2017 10:29 am

Never understood oil change while its "warmed up".
-Should be thinner when its cold?
-Most of the oil should be bottom-dead-center....
-If you warm it up you re-coat the entire engine and fill up passages, so less will drain out in "X" minutes...
-Oil should be macro-"mixed" due to previous running, obviously isolated deposits in valve cover case, filter, lines, may have settled or be non-isotropic...but the overall contaminate PPM should be consistent.
2015 M70
2005 Honda VTX 1300C
Minnesota, USA. (2017 Ural Newbie)

User avatar
Bilgekeeldave
Commissar
Commissar
Posts: 3554
Joined: Thu Jul 19, 2007 12:04 pm
Location: Western Washington

Re: Oil Change Warm or Cold

Post by Bilgekeeldave » Tue May 02, 2017 10:52 am

I change my oil when it's cold also. I just let it drain until it stops dripping.
Dave

RAMCO-Dnepr MT-16

User avatar
Tomcatfixer
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 5466
Joined: Sat Oct 24, 2015 5:10 am
Location: Virginia Beach, VA

Re: Oil Change Warm or Cold

Post by Tomcatfixer » Tue May 02, 2017 11:31 am

I was always under the impression that oil changes should be done immediately after engine shutdown because the contaminants are still suspended in the oil; they haven't had time for gravity to pull them down to "stick" to the pan.
- Chad

Virginia Beach, Virginia, USA

Current rides:
2015 Ural cT "Mobile Chernobyl", 2001 Ural Patrol "The Patrol", 1999 Ural Tourist "The RPOC", 1994 Honda VFR750F, 1986 Yamaha FZX700S Fazer

Previous rides:
2007 Honda VTR1000 FireStorm (Super Hawk in U.S.)
2001 Buell Blast! - - - - - - - 2005 Yamaha FJR1300
1993 Honda CBR600F2 - -1984 Yamaha FJ1100
1986 Yamaha FZX700S (a different one than above)

User avatar
Lokiboy
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 3499
Joined: Fri Apr 29, 2011 9:58 pm

Re: Oil Change Warm or Cold

Post by Lokiboy » Tue May 02, 2017 11:34 am

Tomcatfixer wrote:I was always under the impression that oil changes should be done immediately after engine shutdown because the contaminants are still suspended in the oil; they haven't had time for gravity to pull them down to "stick" to the pan.
+1.

I don't ride around until it's hot, but I'll do a 1/2 mile ride to warm it up
2011 Gear Up - "Erika"
Yorktown, VA

Mains: 127, Idle: 40, Needle: 1 shim
MKIII air filter
80,000 km and counting

User avatar
chaos2
Order of Suvarov
Order of Suvarov
Posts: 4523
Joined: Sun Apr 29, 2012 12:58 am
Location: sw ohio

Re: Oil Change Warm or Cold

Post by chaos2 » Tue May 02, 2017 11:50 am

Warm or hot. Easier to scald you fingers of if you're really stupid grab the exhaust header for those manly "oil change scars"
past afflictions include limey motocars and bikes, R60/2 & a R65ls, and a Citroen.
Now a 2012 rusty GU and a 87 K75s with 200k miles both bought new
dual K&N cones on homemade intake, 40/137.5
Raceway needles
Modtop exhaust
$29 VW Hydraulic steering dampener

rougaroo
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 3612
Joined: Mon Aug 24, 2009 8:58 am
Location: NC

Re: Oil Change Warm or Cold

Post by rougaroo » Tue May 02, 2017 12:25 pm

Geezer knowledge (and dinosaur alert): there once was a time when oils were "non-detergent". Particles settled out of ND oil and remained in the sump. It is still basically a good idea to use ND to break in an engine for the first 500 miles or so, so the metal fines drop out of solution easily. Detergent oils keep particles in solution and circulating in the oil.

So the idea was - as I understand it - that after break-in you should drain ND oil while hot so you get any particles before they settle out. With modern detergent oil, I don't think it makes any difference.

Rougaroo
2003 Tourist - lotsa upgrades
2004 Troyka - work in progress

rivers
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 9071
Joined: Sat Jul 24, 2010 10:04 pm
Location: west WA

Re: Oil Change Warm or Cold

Post by rivers » Tue May 02, 2017 1:11 pm

You want to change oil when hot while all the crap/crud is still in suspension and flows out with the oil. Giving the crud time to settle out into the bottom of the oil pan gains you nothing and just prematurely dirties you new oil.
Joe
014 GU
"I'm lost but I'm making good time."

stagewex
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 5987
Joined: Sat Jul 14, 2012 10:45 pm
Location: New Rochelle, New York

Re: Oil Change Warm or Cold

Post by stagewex » Tue May 02, 2017 4:13 pm

Hot/Warm always if you really want to get all the old oil out.
Stagewex

2007 Ural Patrol, 2006 Yamaha TW200, 1995 BMW K75, 1991 Honda XR250L, 1969 BMW r60/2 US model

GewehrRides1
Party Member
Party Member
Posts: 150
Joined: Thu Apr 07, 2016 4:22 pm
Location: Midway, NC

Re: Oil Change Warm or Cold

Post by GewehrRides1 » Tue May 02, 2017 4:35 pm

I ride mine for a few miles, drain, and leave everything open overnight so I get every last dirty, ugly, crappy drop. Same with trans and final drive.

On day two, I wipe the oil off the floor because some dumb $#!+ kicked the drain pan out of place before going upstairs.
Ron, Brigitte, and Gewehr
Midway, NC

User avatar
sixbennetts
Comrade General
Comrade General
Posts: 953
Joined: Fri Nov 09, 2012 11:39 pm
Location: Plattsburgh, NY

Re: Oil Change Warm or Cold

Post by sixbennetts » Tue May 02, 2017 8:41 pm

Chocolate milk is better when you shake it first. Mixes up all the chocolate in the bottom.

That's why I ride it a bit before an oil change. To get the chocolate out.
I have a funny wife. Hilarious, really.
I love her, she loves me.
______________________________________
2007 Ural Retro, "Подарок солдата солдату"

"I'm slow and like to go old."
Plattsburgh NY

User avatar
Tin Man
Commissar
Commissar
Posts: 10236
Joined: Mon Nov 19, 2007 2:15 am
Location: Johnson County, Texas, USA

Re: Oil Change Warm or Cold

Post by Tin Man » Tue May 02, 2017 10:35 pm

sixbennetts wrote:Chocolate milk is better when you shake it first. Mixes up all the chocolate in the bottom.

That's why I ride it a bit before an oil change. To get the chocolate out.

.........this.......
Mike
2007 GearUp (Arctic #1)
130/45 jets, KTM rock solid mirrors, Delaware Dave's outstanding trunk lock, Mr. Cob's most excellent skid plate, Cycra Probend smashproof hand guards, Duro strong like bull 307's, RotoPax damn near bulletproof fuel cans, MKIII all but water proof air box and Dimples super duper magnetic drain plugs all around...oh yeah, and a manual fuel petcock.

.........if you see something that needs doing, just do it........

User avatar
Wildhorse Cafe
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 1540
Joined: Mon Sep 08, 2014 5:28 pm
Location: King City, California

Re: Oil Change Warm or Cold

Post by Wildhorse Cafe » Fri May 05, 2017 11:41 am

20/50 wt. would be more viscous when cold. :idea:
2011 Patrol Higgs Bison Super Collider formally known as the Orange and Silver Pumpkin Coach
2006 Shinny Black, Tourist, Tatyanna

When you set out on your journey to Ithaca
pray the road is long , full of adventure, full of knowledge
not expecting that Ithaca will offer you riches
Ithaca has given you the beautiful voyage

C.P. Cavafy

kevinkrenik
Comrade
Comrade
Posts: 26
Joined: Mon Apr 17, 2017 12:45 pm

Re: Oil Change Warm or Cold

Post by kevinkrenik » Mon May 08, 2017 4:25 pm

Wildhorse Cafe wrote:20/50 wt. would be more viscous when cold. :idea:
20w=20 winter...big numbers are thick oil...It's why southern states can get away with straight weight oil.
2015 M70
2005 Honda VTX 1300C
Minnesota, USA. (2017 Ural Newbie)

User avatar
Bilgekeeldave
Commissar
Commissar
Posts: 3554
Joined: Thu Jul 19, 2007 12:04 pm
Location: Western Washington

Re: Oil Change Warm or Cold

Post by Bilgekeeldave » Mon May 08, 2017 9:30 pm

The W stands for weight, not winter.
Dave

RAMCO-Dnepr MT-16

User avatar
Tomcatfixer
Hero of the Soviet Union - 2018
Hero of the Soviet Union - 2018
Posts: 5466
Joined: Sat Oct 24, 2015 5:10 am
Location: Virginia Beach, VA

Re: Oil Change Warm or Cold

Post by Tomcatfixer » Tue May 09, 2017 4:50 am

The W stands for weight, not winter.
Oil manufacturer Valvoline seems to think it stands for 'winter': http://www.valvoline.com/about-us/faq/o ... cosity-faq

The Pep Boys break it down even further explaining that there are only six winter blends (I didn't know that): https://m.pepboys.com/accessories/car_c ... rn_weights
- Chad

Virginia Beach, Virginia, USA

Current rides:
2015 Ural cT "Mobile Chernobyl", 2001 Ural Patrol "The Patrol", 1999 Ural Tourist "The RPOC", 1994 Honda VFR750F, 1986 Yamaha FZX700S Fazer

Previous rides:
2007 Honda VTR1000 FireStorm (Super Hawk in U.S.)
2001 Buell Blast! - - - - - - - 2005 Yamaha FJR1300
1993 Honda CBR600F2 - -1984 Yamaha FJ1100
1986 Yamaha FZX700S (a different one than above)

Post Reply