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Oil, cold weather selection

Posted: Tue Nov 04, 2008 3:30 pm
by oilman
At this time of year, it’s beneficial to use an oil that has good cold start flow properties as it will get to the parts of the engine that need it far more quickly when you turn the key.

The "w" number which means winter is the key here and the lower it is the better cold start performance the oil will have.

A 15w or 20w rated oil will struggle to get around the engine in very cold temps and we would strongly recommend using a 10w, 5w or 0w for better cold start performance.

It is a fact that around 90% of all engine wear occurs on cold start because the oil is at its thickest. The colder it gets the thicker the oil becomes and this affects the rate of flow which affects the rate of wear.

These numbers help to explain the oils thickness and therefore cold flow performance at various temperatures.

Grade.................At 0C.................At 10C..............At 100C

0W/20.............328.6cSt...............180.8cSt............9cSt

5W/40.............811.4cSt...............421.4cSt............14cSt

10W/50............1039cSt...............538.9cSt............18cSt

15W/50.............1376cSt..............674.7cSt............18cSt

20W/50.............2305cSt...............1015cSt............18cSt

Centistokes (cst) is the measure of a fluid's resistance to flow (viscosity). It is calculated in terms of the time required for a standard quantity of fluid at a certain temperature to flow through a standard orifice. The higher the value, the thicker the oil.

Winters in this country fortunately are not too cold but, compare the thickness of the oil at 0degC and 100degC and you will see the big difference.

Just something to consider on the frosty mornings.

The Opieoils Team.

Re: Oil, cold weather selection

Posted: Tue Nov 04, 2008 3:37 pm
by dandemoraliser
Nice short term "sticky" me thinks. :thumbup:

Re: Oil, cold weather selection

Posted: Fri May 07, 2010 12:07 pm
by oilman
I hope it's going to warm up soon, so definately a short term sticky

Re: Oil, cold weather selection

Posted: Sun May 16, 2010 10:20 am
by spencer900
good to know :thumbup:

Re: Oil, cold weather selection

Posted: Mon Sep 13, 2010 3:58 pm
by matt.f
Great,so what's recommended for a type r for winter,0w30?

Re: Oil, cold weather selection

Posted: Mon Sep 13, 2010 4:00 pm
by dandemoraliser
matt.f wrote:Great,so what's recommended for a type r for winter,0w30?
unless you live in russia, just stick with 5w40

Re: Oil, cold weather selection

Posted: Mon Sep 13, 2010 4:00 pm
by m1ke
5-40.

The same oil you use in the summer.

Re: Oil, cold weather selection

Posted: Mon Sep 13, 2010 4:02 pm
by dandemoraliser
m1ke wrote:5-40.

The same oil you use in the summer.
yep just expect to burn more in the summer months

Re: Oil, cold weather selection

Posted: Mon Sep 13, 2010 4:05 pm
by matt.f
It's cold up north!
Cheers

Re: Oil, cold weather selection

Posted: Mon Sep 13, 2010 4:29 pm
by oilman
In the new shape Civics, a 0w-30 is the recommended grade for all year round use for most of them. To be honest, most Hondas aren't that fussy can can use a 0w-20 up to 10w-40 without issue.

Re: Oil, cold weather selection

Posted: Tue Sep 14, 2010 9:45 am
by matt.f
Think I'll try 5w40 Millers fully synthetic

Re: Oil, cold weather selection

Posted: Tue Sep 14, 2010 9:48 am
by m1ke
matt.f wrote:Think I'll try 5w40 Millers fully synthetic
It's top notch stuff.

Re: Oil, cold weather selection

Posted: Tue Sep 14, 2010 9:48 am
by oilman
Tis a good oil, we find it sells well :)

Cheers

Guy

Re: Oil, cold weather selection

Posted: Tue Sep 14, 2010 9:50 am
by m1ke
The difference in customers probably. We couldn't sell it here, it's too dear.

Re: Oil, cold weather selection

Posted: Tue Nov 09, 2010 8:22 pm
by Cosmic_Chi
Mobil 1 0-40?

Re: Oil, cold weather selection

Posted: Wed Nov 10, 2010 10:21 am
by oilman
That's good stuff. A mate of mine uses it in his CTR without and problem and also used it in his EP3 CTR

Re: Oil, cold weather selection

Posted: Thu Nov 11, 2010 9:34 pm
by Cosmic_Chi
oilman wrote:That's good stuff. A mate of mine uses it in his CTR without and problem and also used it in his EP3 CTR
So mobil1 0-40 is not too thin for all year round no? would it stand up to track day beatings?

Re: Oil, cold weather selection

Posted: Thu Nov 11, 2010 9:45 pm
by azzo
hi guys im after abit of advice a few months ago i bought sum oil just to top up. the place i got it from said it was right for the car but i only noticed today. it is mobil 10 40 semi syn ive pit about a pint in over a few months will this do any harm and am i best changing it cheers aron

Re: Oil, cold weather selection

Posted: Fri Nov 12, 2010 9:11 am
by oilman
That's fine for topping up with, half a litre out of about 5 in the engine really isn't a lot, so nothing to worry about.

Re: Oil, cold weather selection

Posted: Tue Dec 14, 2010 11:57 pm
by phozy888
whats the mobil 1 0-40w new life about ? still the same as before just a new name ?