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oilman

Member Since 28 May 2009
Offline Last Active Oct 10 2014 02:17 PM
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#350263 Opie Oils Spring Competition To Win Go Pro Hero 3+

Posted by oilman on 03 April 2014 - 09:19 AM

 
Hi Folks,
 
Opie Oils have got their hands on a Go Pro Hero 3+ Motorsport Black Edition worth over £350 and are using it as there spring Competition. This competition will be running until the end of June.   
 
The Go Pro comes with a Wi-Fi Remote,Quick Release Buckles,Curved & Flat Adhesive Mounts and a 3-Way Pivot Arm
 
To be in with a chance of winning the amazing prize, all you have to do is answer a simple question at the link below. 
 
forum-spring-comp.jpg
 
The team at Opie Oils would like to wish you the best of luck.
 
Cheers
Oilman 



#296033 Engine Oil Viscosity

Posted by oilman on 11 October 2013 - 01:41 PM

Engine Oil Viscosity

Viscosity is the most misunderstood aspect of oil and yet it is the most important.

Viscosity is the force required to shear (break) the oil at a certain speed and temperature. Oils work because they have viscosity; the drag of a rotating part pulls oil from a low-pressure area into a high pressure area and “floats” the surfaces apart. This is called “hydrodynamic lubrication” and crankbearings depend on it.

Oil must be capable of flowing at low temperatures, so that it gets around the engine in a fraction of a second at start-up and must protect engine components at high temperatures without evaporating or carbonising and maintain adequate (not excessive) oil pressure. Many people think that the thicker the oil, the better the protection, but if the oil is too thick, it will not flow properly, leading to reduced protection.

The numbers on every can of oil indicate its performance characteristics when new but there are many misconceptions on what these numbers actually mean.

For multigrade oils you will see two numbers (for monograde oils only one). The first is followed by a “w” and is commonly 0, 5, 10, 15 or 20. The second number is always higher than the first and is commonly 20, 30, 40, 50 or 60. The first and second numbers ARE NOT related.

The “w” number (0, 5, 10, 15 or 20)
When multigrade oils first appeared, a low temperature test called “w” (meaning “winter” not weight) was introduced. Using a “Cold Crank Simulator", the test measures the oils ability to flow at low temperatures. ALL oils are THICKER at low temperatures than at high temperatures but the lower the “w” number, the quicker the oil will flow at low temperatures.

The second number (20, 30, 40, 50 or 60)
This number is known as the SAE (Society of Automotive Engineers) number and is measured in “Centistokes” (cst) at 100C. 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.

An oils cst at 100C determines its SAE rating within the following parameters.
SAE 20 = 5.6 to less than 9.3cst
SAE 30 = 9.3 to less than 12.5cst
SAE 40 = 12.5 to less than 16.3cst
SAE 50 = 16.3 to less than 21.9cst
SAE 60 = 21.9 to less than 26.0cst

ALL oils labelled 40 must fall within the SAE parameters at 100C so everything from a monograde 40 to multigrade 0w-40, 5w-40, 10w-40, 15w-40 or 20w-40 are approximately the same thickness at 100C.

Some oil companies label oils as SAE 35, 45 or 55, but as you can see from the above figures, there isn't a SAE 35, 45 or 55. This "could" be because they are approximately on the boundary of the two grades, but as we don't deal with any of those I can't really comment further.

Summary

Cold start.
A 5w-40 will flow better than a 10w-40.
A 10w-50 will flow better than a 15w-50
A 5w-40 is the same as a 5w-30

At operating temperatures.
A 10w-50 is thicker than a 10w-40.
A 15w-50 is thicker than a 5w-40
A 0w-40 is the same as a 10w-40

If you look above, you will see that the figures quoted do not indicate at all as to whether the oil is synthetic or mineral based... Well except for 0w oils as synthetic PAO basestock is required to acheive this viscosity.

Generally the oil you use should be based on the manufacturers recommendation found in the owners manual, but then modifications, climate and the type of use can affect that recommendation. If you are unsure of what is the correct recommendation for your car and would like to know more please contact us here oilman@opieoils.co.uk

With thanks to John Rowland of Fuchs/Silkolene

Cheers

Tim and the Opie Oils team
 




#97331 Oil Change Time ..... Semi Or Fully Synthetic

Posted by oilman on 15 September 2010 - 09:54 AM

interesting Q that I was trying to ask myself a few weeks ago when i did a change on my focus.

I attempted to look at all the pro's and cons of each. In the end I went to my local ford dealers and asked them. The guy behind the parts counter was really helpful and told me that by factory stock my focus tdci uses semi-synthetic 5-w30 formula-E which conforms to specification WSS-M2C913-B. He also said I could purchase this from ford direct if I wished. (at this point I was expecting a very high price tag) however it was only 25.99 for 5 litres, I didnt think that was a bad price for ford oil and liked the idea of keeping the same oil in the car as it gets when ford services it :)

they also sold me the official filter for 8

the guy behind the counter said using fully synthetic over part-synth had virtually no advantages for the type of general driving I do (as im not really putting the engine under a huge amount of strain or anything, so I thought why bother paying more and changing? :)

If ford use part-synth I guess thats what the engine was designed for :)

however any 5W-30 oil which conforms to WSS-M2C913-B should be fine for my engine, not sure if the specification is the same for a petrol? it says the specification needed in the handbook near the back pages :)

hope this helps



The ford M2C-913B spec replaced the original M2C-913A spec and is for both Ford petrol and diesels (with a few exceptions such as the new ford focus RS and the VW engined diesel fords. Oh and some of the new euro iv spec diesels).

Ford dont recommend semi or full synthetic, just a spec such as the Ford M2C-913B spec, and a viscosity 5w-30. For warranty purposes as long as the oil meets this spec what it is made from (semi or full) is down to the owner.

If you look here you will see a mix of semi and full synthetic 5w-30's that all meet the ford spec http://www.opieoils....-m2c-913-b.aspx

Cheers

Guy