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Quick question about oil


dfor's Avatar
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03-25-04, 12:56 PM   #1  
dfor
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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toyotaman11769's Avatar
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03-25-04, 01:37 PM   #2  
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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03-29-04, 03:26 PM   #3  
Dan Meyer
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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03-29-04, 03:29 PM   #4  
Dan Meyer
My message got cut off. I was going to say, NEVER mix a regular oil with a synthetic NEVER!!!!!!

 
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03-29-04, 09:28 PM   #5  
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.

 
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03-29-04, 09:51 PM   #6  
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...

 
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03-30-04, 03:42 AM   #7  
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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