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Synthetic Motor Oil.....


SWL

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3 minutes ago, JJkizak said:

Why to car dealers charge 20% more for synthetic oil changes over standard oil changes?

JJK

Same reason tire repair shops charge more to mount / repair 20” tires than smaller diameter....BS. 

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5 hours ago, jason str said:

Synthetic oil now contains something to make seals swell like normal oil so the negatives are a thing of the past. Synthetic will last longer and protect better because it simply is able to lubricate longer without breaking down.

I didn't think oil really has much chance of breaking down it car engines given the relatively low temps involved.   It's the ability to handle contaminates from blowby, some of which form into acids (sulphuric and nitric), that determines the real life of oil, being much more limited than the oil being able to lubricate properly. There is massive amounts of testing in aviation oil that shows what oil can take, the amount of acid it can neutralize, etc.

 

Anyone who wants to know what there oil is doing and capable of should send a sample to Blackstone labs.  

 

They will tell everything you wanted to know about your oil, life remaining, etc.

 

 

 

Travis

 

 

 

 

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11 minutes ago, dwilawyer said:

Automotive filters have a bypass valve that is based on differential.   

 

It triggers when engine is cold and oil is thick or when filter is clogged.  When the engine warms up the bypass closes.

 

No, its based on pressure.

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4 minutes ago, jason str said:

 

Its just a valve and spring opening and closing with oil pressure, if full oil pressure was to go through the filter it would rip the media apart.

 

 

 

Not if the media isn't clogged, as in the case of warm or hot oil.

 

A clogged filter would/could explode with a clogged filter or cold thick oil, in those situations the differental in pressure overcomes the force of the spring and the filter is bypassed.

 

 

 

 

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38 minutes ago, dwilawyer said:

Anyone who wants to know what there oil is doing and capable of should send a sample to Blackstone labs.  

Anyone who wants to know the proper usage of there versus their can consult a dictionary.  LOL,  sorry Travis, some things are too difficult to resist.

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1 minute ago, dwilawyer said:

Not if the media isn't clogged, as in the case of warm or hot oil.

 

A clogged filter would/could explode with a clogged filter or cold thick oil, in those situations the differental in pressure overcomes the force of the spring and the filter is bypassed.

 

 

 

 

 

A clogged filter will not explode if functioning properly, too much engine oil pressure will cause a filter explode.

 

Oil will not be sent through the filter media if clogged, it will go through the filter bypass.

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2 hours ago, oldtimer said:

Anyone who wants to know the proper usage of there versus their can consult a dictionary.  LOL,  sorry Travis, some things are too difficult to resist.

 

If I recall correctly, Travis dictates posts to software, which could explain the improper use of their/there.  His sin seems to be failure to edit.  He needs to invest in better software capable of deciphering a Texas accent and using context to select between homophones.

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2 hours ago, jason str said:

 

A clogged filter will not explode if functioning properly, too much engine oil pressure will cause a filter explode.

 

Oil will not be sent through the filter media if clogged, it will go through the filter bypass.

That's what I said, it won't explode because it is bypassed.

 

It isn't bypassed when you have a clean filter, warm or hot oil, regardless of engine speed from everything I have read and what they say at Blackstone.

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18 minutes ago, DizRotus said:

 

If I recall correctly, Travis dictates posts to software, which could explain the improper use of their/their.  His sin seems to be failure to edit.  He needs to invest in better software capable of deciphering a Texas accent and using context to select between homophones.

Ain't it the truth. 

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