syntheic and non- synthetic do not mix ?? :)

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Russell

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The following was quoted in another automotive forum. This is the first I ever heard of it. I find it outlandish. Is there any thing to it.??? If that guy worked at an oil changing shop, he must have also sold fries the week before.
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"Don't top off with synthetic.. more than likely the previous owner ran regular oil in it not synthetic.. if u mix synthetic and non-synthetic u will b wasting money as one will SIT on top of the other, they DO NOT mix. Therefore your oil pump will b pumping only synthetic or only non-synthetic(I forget which is lighter and sits on top).. b safe and just change it all with non-synthetic oil as using synthetic oil on a car that likely has 200k + miles will gain u nothing. I work at a shop changing oil and all that good stuff. Good luck gettn the car bak home!"
 
Originally Posted By: Russell
If that guy worked at an oil changing shop, he must have also sold fries the week before.
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Yeah...and likely a teenie bopper with little-to-none automotive knowledge, too.
 
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Sit on top of the other!!!!
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I would have been able to view the "strata" of my oil in my Kawasaki's oil level sight glass!
 
Hey Russell! Move it over to the "Humor" section.
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Just kidding. I like it where its at. More exposure.
 
Originally Posted By: Hallmark
Originally Posted By: Russell
If that guy worked at an oil changing shop, he must have also sold fries the week before.
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Yeah...and likely a teenie bopper with little-to-none automotive knowledge, too.


Actually, it seems the more people I talk to about oil, it is the "older" generations that seem to still be spreading this stupidity. You know, the "Pennzoil is made from WAX!!!" people. More younger folks I've talked to seem more apt to reason that if there is such a thing as a "synthetic blend" oil, then it must be ok for the two (synthetic and conventional) to mix.

I dunno... something about an old dog and new tricks and all that jazz.
 
By Chuckles reasoning, I should see this 'layering' on the dipstick every time I read it, since in addition to the Syntec that was the original 4 quart fill, there's been a quart of QS HM added as top up over the OCI as well.

Too bad for him it just looks like the usual nice brown gravy it always does this far along in the OCI (the good, lump free, kind of gravy).

-Spyder
 
That's one of the best yet.....no wonder the education system is in disarray and falling apart.

I had some automotive people, insist, that I can't add Dino and Synthetic to a sump during an OCI without blending the two oils together first....before adding it to the crankcase.

The same reason was given....the synthetic will float on top of the Dino and never get mixed together.

All you can do when you hear this nonsense, is stare in amazement, try not to laugh and move on FAST....pretty sad.
 
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Originally Posted By: musicmanbass

Actually, it seems the more people I talk to about oil, it is the "older" generations that seem to still be spreading this stupidity. You know, the "Pennzoil is made from WAX!!!" people.


You mean Pennzoil's not made from wax???? The way I heard it, candle makers routinely used the stuff to make their product. Or, maybe that was Quaker State ......
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Well, of course. Pennzoil is made from paraffinic oils, and everybody knows that paraffin is wax.
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I had an old timer who ran a gas station tell me that you couldn't mix 30-wt. and 40-wt. oils. He said you would just have both in the crankcase, but they wouldn't mix. I never quite understood that. He was a big fan of Shell Fire and Ice oils, though, as they were made from napthenic oils (according to him) and didn't have any paraffin.
 
Originally Posted By: dwendt44
Out side of Brand Penn oils, are ANY motor oil made from a paraffinic base anymore??


You mean other than ALL of them? (leaving out GTL, PAO's and G-V that is).
 
I was making a joke. Paraffinic doesn't mean waxy. Paraffins are also known as alkanes. For instance, methane is a paraffin. So, when "Paraffinic" is used to refer base oils, it refers to specific chemical properties that have nothing to do with wax.
 
I see that this came up on bimmerfest.com. I made the mistake of signing up for bimmerfest when I recently got my '98 323iC. It seems to be populated by young males who want to show that they know everything about everything, even when they don't. (Or at least the E36 board is this way.)
 
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