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Oil Change Frequency: BF I6 

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 8:52 pm 
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And who the hell gets an oil analysis?!? You guys have absolutly no idea
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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 9:03 pm 
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Tickford_6 on here has. So yes some people do it. :wink:

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 9:38 pm 
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Ashhubb wrote:
And who the hell gets an oil analysis?!? You guys have absolutly no idea


And you sir are a knob.

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 9:40 pm 
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Oh yeah how long has he been doing it? Has he employed a tribologist to investigate the effects of different oils on his engine? Does he own a plane or train or is he actually doing it for his car??
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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 10:26 pm 
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ive done 2 samples on my last car, the 2nd sample showed an increase in copper particles, which explained my lower than normal oil pressure problem. thats when I started to rebuild a spare engine for it. and no, I dont own a plane or train.

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 10:51 pm 
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Matt_jew wrote:
Ashhubb wrote:
And who the hell gets an oil analysis?!? You guys have absolutly no idea


And you sir are a knob.

:lol:

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Thu Aug 01, 2013 11:06 pm 
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Ashhubb wrote:
The whole purpose of oil is that it sticks to the crank bearing, valve springs, push rods etc thats why the viscosity matters. In simple mans terms if it is runny like water it aint gonna stick to stuff and lubricate it. So that means the viscosity is all that matters! Who cares if its dirty lol as long as it lubricates!


oh s**t, the oil I put in is runny like water.
(0W40)

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 12:46 am 
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Man, i didnt join this forum to have a petty argument, i cant be bothered explaining this s**t to you tyre kickers so i just coppied and pasted some simple, should have learnt when you were 10 information.


When motorists are asked: "Why does motor oil need to be changed?" the most common answers are:

It gets dirty

It breaks down

Because my mechanic told me


Amazingly all above reasons are WRONG !

And here is why:

In modern fuel injected electronically controlled engines with "sealed" crankcases there is no way that "ambient" dirt can get into the engine oil. Only if AIR FILTER is defective (torn or improperly installed or missing) or PISTON RINGS are excessively worn or broken, small amount of "dirt" can be introduced into the engine lubricating oil.
(For more info go to: Dirty Motor Oil in Q&A in Publications)

The Hydrocarbon Oil in its pure form is quite stable chemical, after all it has been in existence for millions of years before it was introduced into your vehicle. Almost no amount of pressure or mechanical stress will "damage" the oil molecules. Interaction with other chemicals, extreme heat and availability of oxygen will cause oxidation, formation of gum, varnish and sludge, but not a "Break Down". The long chain polymer molecules that are present in most multi-viscosity oils to give them high viscosity index, can however shear under stress and become shorter or smaller molecules. This loss of multi-viscosity property is sometimes referred to as "Viscosity Break-Down" a term that was introduced by CASTROL in their GTX Motor Oil commercials.

Unfortunately most mechanics are NOT Automotive Engineers, are NOT Lubrication Engineers, are NOT Tribologists, are NOT Chemists, are NOT Rheologists.
Neither is typical mechanic equipped with MICROSCOPE, VISCOMETER, TITRATION UNIT, SPECTRO-CHEMICAL ANALYZER.
One needs all of above to determine if any Oil needs to be changed. Also since such TEST can cost from $10 to $100, depending on accuracy and complexity, it is more convenient to change oil at some arbitrarily determined interval.





There are two reasons why lubricants need to be changed periodically:

The most important reason is chemical change of the lubricant itself. The lubricant looses its lubricating capacity due to chemical decomposition of the oil itself and due to depletion of the chemical additives that are present in modern oils. The more severe are the operating conditions, the faster does this change occur.

The second reason is removal of wear particles that are present in the lubricant and which can not be removed by normal filtration. The greater the loads to which the mechanism is subjected the faster is the wear and more wear particles are present in the oil. Frequent starting and stopping of the engine, especially in winter, also increases wear and formation of "cold sludge".
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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 12:56 am 
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ranga83 wrote:
ive done 2 samples on my last car, the 2nd sample showed an increase in copper particles, which explained my lower than normal oil pressure problem. thats when I started to rebuild a spare engine for it. and no, I dont own a plane or train.


The idiocy coming out of your mouth is f**k rediculous, you bring much shame to ford
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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 1:01 am 
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how is that idiocy? I suspected worn bearings and the tests confirmed it. when I pull the engine down, the bearings were f**k, but me being a 3rd generation qualified mechanic means I know f**k all yeah?

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 1:03 am 
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and who said my last car was a ford?

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 1:27 am 
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Mate, there is no way your a mechanic
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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 1:37 am 
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you had better tell that to the bosses that were paying me for the last 10 years or so

 

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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 1:41 am 
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ranga83 wrote:
how is that idiocy? I suspected worn bearings and the tests confirmed it. when I pull the engine down, the bearings were f**k, but me being a 3rd generation qualified mechanic means I know f**k all yeah?


Honestly, you couldnt look at the flakes when you took the oil filter out or on the dipstick? You couldnt HEAR the bearing?!!? Your full of s**t and your a f**k dunce, i bet you work at a tyre centre.
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 Post subject: Re: Oil Change Frequency: BF I6
Posted: Fri Aug 02, 2013 1:51 am 
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there was no noticable noise, and there wasnt noticable flakes in the oil that I seen anyway.
I worked for one of the biggest fleet companies in australia. we had just started sampling all the vehicles so the boss said to send a sample of mine. TBH I dont give a rats a*** if u believe me or not.

 

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