if synthetic blends are only 10% synthetic why not just blend 5 qts reg oil and 1 qt synthetic and make your own blend?Do they do something special when they blend it to make it cost almost 3 bucks a qt?I'm thinking about switching to Havoline 5-30 and blending 5 reg with 1 synthetic...any thoughts...i just can't see spending 3 bucks a qt for 10% synthetic and i don't want to run full synthetic.
synthetic blends
- Thread starter 99PontTA
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Where did you get the 10% figure at? This question comes up regularly here and the usual response is that nobody has any idea how much synthetic is any of the blends.
MolaKule
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The right additive packs have to selected for the blends.
For Example:
1. if a VII is used, it has to be miscible with both mineral and synthetic oils.
2. proper selection of Anti-0xidants have to determined in order to have synergistic, not antagonistic, effects.
don't some HM oil have more syn than syn.blends?
Every time I ask Valvoline they say Durablend is 30 percent synthetic.
I would have no problem blending a couple quarts synthetic with a few conventional. In fact, I put Maxlife 10w30 with one quart Maxlife Synthetic 10w30 in my motorhome.
I would have no problem blending a couple quarts synthetic with a few conventional. In fact, I put Maxlife 10w30 with one quart Maxlife Synthetic 10w30 in my motorhome.
Triple_Se7en
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I generally mix three dino to one synthetic (33%). Had I owned poster 99PontTA's vehicle, I would of used four dinos and two synthetics.
3 dino plus one syn = 25%
2 dino plus one syn would be 33% syn.
I think that is correct?
Take care, bill
Well each blender/bottler decides the syn in syn blend. I asked our additive sales rep and some others that have woked across the industry. Result: Most syn blends are 8 to maybe 15% syn (GIII).
The amounf of syn is determined by lawyers as much as the development/product people...
I do not understand why folks use blends from an engineering standpoint (assuming it's(the blend) not used to economically meet a spec via less additive and favorable base oil economics...e.g. ConocoPhillips brands I would guess).
Either severe service needs syn (temp & heat) or not...kinda binary to me. It's normally not the syn that makes an oil last, it's the overadditizations above GF4 --- few oils deplete from oxidation/volatility/flow (the bennies of a GIII or PAO-based base oil).
YMMV besides I can see that mixing is kind fun in a techie sorta way
The amounf of syn is determined by lawyers as much as the development/product people...
I do not understand why folks use blends from an engineering standpoint (assuming it's(the blend) not used to economically meet a spec via less additive and favorable base oil economics...e.g. ConocoPhillips brands I would guess).
Either severe service needs syn (temp & heat) or not...kinda binary to me. It's normally not the syn that makes an oil last, it's the overadditizations above GF4 --- few oils deplete from oxidation/volatility/flow (the bennies of a GIII or PAO-based base oil).
YMMV besides I can see that mixing is kind fun in a techie sorta way
This 10%-15% syn content number gets the "parrot" routine quite frequently on this site.
Using 5w30 Valvoline Durablend, as an example, how does the addition of only 15% Grp III base oil, to a Grp I, decrease the overall volatility enough to pass GF-4?
Remember, we're talking 4 cSt base oils, which tend to be volatile regardless if Grp I thru III.
Specific gravity is another issue - how does the addition of only 15% Grp III drop the Valvo Durablend 5w30 to the low .850's?
Instead of mixing dino/synthetics in this ratio or that ratio, why not use straight dino and put in the additive LC20? Won't that do better in terms of extra oil life expectancy and protection/lubrication than mixing this and that which may conflict with each other in the end?
Well then Maxlife with its 12-22% PAO (per MSDS) could be labeled a blend. Perhaps Valvoline choose not to label it a blend as they might scare off some of the old timers who are dead set on conventional (the old synthetic will cause leaks crowd)?
99PontTA, Is that that mix that was making all the noise? Your anti-Havoline post sounded like you were using straight Dino. Perhaps M1 and Havoline isn't a good mix. Regardless, I think you've done the right thing by going back to the 7500 as it obviously agrees with your motor. By the way, it's rumored that mobil 7500 mostly grp 3 with group 4 and probably some dino for adds so it may be considered a synth by some manufactuers. I can't verify any of this.
Some folks say, when blending, stick with like brands and viscosity grades to prevent additive clash. My brother makes a 33% 5w30 syn blend using Mobile and Mobile 1. He likes it in his truck and runs it about 7500 miles.
...for my 4.2 F150, at least Havoline with a little m1 seems to run quite well, no, I have no uoa's but seat of the pants its a good mix ....fwiw.
r.
has anyone used mobil 1 synthetic blend. Its on sale at kragen for .98?
zeta3ce: No such thing as Mobil 1 synthetic blend, I think you must be referring to Mobil Clean 7500 which is Mobil's semi-sythetic oil.
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