Quick question about oil

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  #1  
Old 03-25-04, 12:56 PM
dfor
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Quick question about oil

Can different brands of oil be mixed together. ie, castrol, quaker state, valvoline, etc. It would all be 5w-30.
 
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  #2  
Old 03-25-04, 01:37 PM
Join Date: Jun 2002
Location: Long Island, NY
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That shouldn't be a problem, you can even mix synthetic and regular. Although I would only do it if it was low on oil and needed to add.
 
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Old 03-29-04, 03:26 PM
Dan Meyer
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You can even mix different grades together.
A 20W and a 40 would give you a 30 grade. It is not a good idea to mix different brands. Chances are you could do it a thousand times and never have a problem. but somtimes the additives used by different oil companies can have an adverse reaction with each other. NO
 
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Old 03-29-04, 03:29 PM
Dan Meyer
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My message got cut off. I was going to say, NEVER mix a regular oil with a synthetic NEVER!!!!!!
 
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Old 03-29-04, 09:28 PM
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Originally posted by Dan Meyer
My message got cut off. I was going to say, NEVER mix a regular oil with a synthetic NEVER!!!!!!
Why would you say that???

Synthetic blend that you buy off the shelf is part synthetic & part conventional oil.
 
  #6  
Old 03-29-04, 09:51 PM
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Uh-oh
Here we go again!
Synthetics are better-no question
Are they worth the money?
Thats up to you
Can you mix grades?- not forbidden
In reality, to answer your question, it is not a good idea to mix brands due to the additives they add
Some brand's additives may "counter-act" others
Stick w/ one - OK to top off w/ another
Synth blends are a marketing tool to get people to buy a more expensive (profitable) product
They are compatible, yes...
But why bother...
 
  #7  
Old 03-30-04, 03:42 AM
Desi501's Avatar
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Originally posted by slickshift

They are compatible, yes...
But why bother...
That's basically it. A quart here and a quart there doesn't effect anything.
 
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