% of Syn.....in Motorcraft Blend 5w20

Pennzoil motor oil
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Oregoonian

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After my next oil change...I plan on using a 'Blend'. Does anyone know what percentage of Syn is in MC 5w20 Blend?

My other thought is creating my own blend. I was thinking of combining Pennzoil Conventional and Pennzoil Platinum. I believe that Pennzoil conventional might be one of the best conventional oils on the market.

I have a 4.5 quart sump....so I thought I would use 3 quarts of Pennzoil conventional....and 1.5 quarts of PP (33% Syn).

Would appreciate any info on the MC Blend....and your thoughts on making my own.
 
I don't think it is known for sure. I've heard it suggested that MC blend is 20% synthetic. I make my own blend using two quarts MC full synthetic and three quarts MC synthetic blend. If MC blend is 20% synthetic, I figured I am getting a 48% synthetic blend.
 
I have thought about blending my own using oil from the same manufacture but, decided against it. My reasoning is that oil blenders spend a great deal of time and money formulating a specific oil for a specific application. If I do my own blending, then I have upset this additive system. I may end up with a less good instead of a better oil. I see nothing to be gained. Let the flaming begin but, please do it with some reasonable objections or data. JMO. Ed
 
I have read that the blend is typically about 30% synthetic and the rest conventional oil. Blending your own mix is certainly done all the time and in different percentages. You can usually find some good deals for 5 quart jugs of conventional, blend, and sythetics and a good filter at most auto part stores that is probably less expensive than single quart bottles. Good shopping and have fun with your oil change.
 
Originally Posted By: Eddie
I have thought about blending my own using oil from the same manufacture but, decided against it. My reasoning is that oil blenders spend a great deal of time and money formulating a specific oil for a specific application. If I do my own blending, then I have upset this additive system. I may end up with a less good instead of a better oil. I see nothing to be gained. Let the flaming begin but, please do it with some reasonable objections or data. JMO. Ed


I agree with you. There is no need to tinker. Probably no harm, but no real need to take the chance.
 
Originally Posted By: rjacket
Originally Posted By: Eddie
I have thought about blending my own using oil from the same manufacture but, decided against it. My reasoning is that oil blenders spend a great deal of time and money formulating a specific oil for a specific application. If I do my own blending, then I have upset this additive system. I may end up with a less good instead of a better oil. I see nothing to be gained. Let the flaming begin but, please do it with some reasonable objections or data. JMO. Ed


I agree with you. There is no need to tinker. Probably no harm, but no real need to take the chance.

No flame here either, actually makes sense and I agree also. Though I have "mixed" oil in the past - for example my Merc. needs 6 quarts of oil. I've used a five quart of Pennzoil Ultra and one quart of Pennzoil conventional or on the older vehicle, half and half or whatever I had left over.
 
Last edited:
Originally Posted By: qdeezie
If you're buying individual quarts, wouldn't it be cheaper just to buy a 5 quart jug on sale? Individual quarts are sky high.


Yes....I would buy 5 quart jugs.........
 
Originally Posted By: Eddie
I have thought about blending my own using oil from the same manufacture but, decided against it. My reasoning is that oil blenders spend a great deal of time and money formulating a specific oil for a specific application. If I do my own blending, then I have upset this additive system. I may end up with a less good instead of a better oil. I see nothing to be gained. Let the flaming begin but, please do it with some reasonable objections or data. JMO. Ed


What if you mix different viscosities of the same brand, will that upset the additive package?
 
Originally Posted By: Oregoonian
Originally Posted By: tig1
15-20%.


Tig.....where did you find out that MC Blend has 15 to 20% syn.


That's a general average for blends.
 
Originally Posted By: Merkava_4

What if you mix different viscosities of the same brand, will that upset the additive package?


No problem...

I'll mix different viscosities of the same oil in a instant but unless it's a emergency, will never mix different brands...
 
Few years ago I gave Kendall a call and was told it was close to 50% . Motorcraft could be the same . Give CoP a call , it's toll free and they're quite helpful . Did give PENNZOIL a call about the GOLD and stated it's 50% syn . Nothing wrong with blending your own oil .
 
OK!
I have read in the past that most syn/blend oils are about 7%-15% Group III (HydroCracked/Iso-Dewaxed) synthetic and the remaining is Group II conventional oil and marketing. IDK! Although all oils today are pretty good products and I am not attacking any brand.

I have also read that other syn/blends oils are up to about 25% Group III. Which ones, IDK! Does anyone really know?

What I do know is the % of blend, if I add 2 qts of PP to my 3 qts of Pennzoil conventional
smile.gif
 
Originally Posted By: Eddie
Sometimes I see a greyed out previos responce and under it is a responce. How does one do this? Thanks. Ed


You hit the quote button Eddie, then type your response like I just did!
 
Thanks KCJeep
Originally Posted By: KCJeep
Originally Posted By: Eddie
Sometimes I see a greyed out previos responce and under it is a responce. How does one do this? Thanks. Ed


You hit the quote button Eddie, then type your response like I just did!
 
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