Semi-Synthetic Oil
#1
Drifting
Thread Starter
Semi-Synthetic Oil
What is semi-synthetic oil? I've read all the threads on Synthetic versus dyno oil, but what is semi-synthetic oil? Is it better than dyno oil at all? Is there a way to tell the synthetic v. dyno blend?
#2
Three Wheelin'
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NOT WORTH IT.
It's a mix of dino and syn oils. Might as well be putting dino oil IMHO. We stopped selling that stuff at work. It's one or the other so just use dino or syn oils.
It's a mix of dino and syn oils. Might as well be putting dino oil IMHO. We stopped selling that stuff at work. It's one or the other so just use dino or syn oils.
#3
Three Wheelin'
I've always wondered how much synthetic is actually in a synthetic blend oil. For those people who insist on using it I'd say buy some dino oil and replace a quart or two with synthetic. I personally don't see any point in it, like seb said use one or the other.
#5
Nerd Herder
Rennlist Member
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Here goes my usual rant.. My experience- Mobil1 exclusively in a daily driven Porsche for almost 8 years.
If you wanna do Dino- fine, synthetic does NOT cause leaks, but will propagate thru existing leaks plugged by dino-oil. I wouldnt trust a "mix" - no real benefit from it over dino.
and drugs are bad, mmkay!
If you wanna do Dino- fine, synthetic does NOT cause leaks, but will propagate thru existing leaks plugged by dino-oil. I wouldnt trust a "mix" - no real benefit from it over dino.
and drugs are bad, mmkay!
#6
Race Car
mmmkay mr counsellor from south park!
Anyhoo...
Yep, there is no law restricting the synthetic oil content in a synthetic blend, or semi-synthetic oil.
I think they are required to list SOMEWHERE what the synthetic content is though, but I'm not sure on that.
IMO, just go with a full synthetic, your engine will thank you for it.
Anyhoo...
Yep, there is no law restricting the synthetic oil content in a synthetic blend, or semi-synthetic oil.
I think they are required to list SOMEWHERE what the synthetic content is though, but I'm not sure on that.
IMO, just go with a full synthetic, your engine will thank you for it.
#7
i think the blends have their place, espeically when you consider that most "synthetic" oils are just improved formulas still made on conventional, pulled from the ground oil base stocks. so theyr'e really just a grade between the different levels of hydrocracked oil, the regular and the synthetic, like the mid grade gas or whatever.
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#8
Nordschleife Master
From what i have read, is it true that Mobil 1 is not a full synthetic oil? I believe they said something about Castrol Syntech was 100% synthetic.
Im not sure if that is true or not, i read that a few months ago here on the forums.
Im not sure if that is true or not, i read that a few months ago here on the forums.
#9
NOT WORTH IT.
It's a mix of dino and syn oils. Might as well be putting dino oil IMHO. We stopped selling that stuff at work. It's one or the other so just use dino or syn oils.
It's a mix of dino and syn oils. Might as well be putting dino oil IMHO. We stopped selling that stuff at work. It's one or the other so just use dino or syn oils.
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#10
Three Wheelin'
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Matt Yes some of the dino oils we sell are semi-syn but they are not market as a syn blend oil. I think the syn blend oils that are for sale it's worthless to pay the extra money for something you get with some dino oils now. Also the oil prices went up once again for us. It's like a 3 month thing now it goes up.
#11
other way around, mobil 1 is the only really readily avaliable oil that is full synthetic, using PAO and ester bases. syntec is not, EXCEPT for (get this) the 0w30 weight which is labeled "made in germany." yeah, the german one is synthetic.
the new oil standards for dino are also outrageous, as matt h pointed out, so there's probably not any problem with using them. but of course, i say that but use fleet grade extended service oil like delvac 1 myself, at 8 bucks a quart....
the new oil standards for dino are also outrageous, as matt h pointed out, so there's probably not any problem with using them. but of course, i say that but use fleet grade extended service oil like delvac 1 myself, at 8 bucks a quart....
#12
Matt Yes some of the dino oils we sell are semi-syn but they are not market as a syn blend oil. I think the syn blend oils that are for sale it's worthless to pay the extra money for something you get with some dino oils now. Also the oil prices went up once again for us. It's like a 3 month thing now it goes up.
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#13
Three Wheelin'
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We are an indepentant shop around we charge 21.95 which comes out to 23.49 with tax. Jiffy lube and them start around 30$ which is a hugh rip off. We used to charge a buck less but was in August before the oil company started to raise the price up every 3 months now. That is for oil that is worth something GTX. There are shops that do the oil change for 9.95 use and use crap oils but those would be shops that make you pay probably 50-75$ atleast for the oil change cause they make up stuff about needing this and that.
#14
We are an indepentant shop around we charge 21.95 which comes out to 23.49 with tax.
Jiffy lube and them start around 30$ which is a hugh rip off.
There are shops that do the oil change for 9.95 use and use crap oils
but those would be shops that make you pay probably 50-75$ atleast for the oil change cause they make up stuff about needing this and that.
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Last edited by Matt H; 11-18-2004 at 10:04 AM.
#15
Drifting
Thread Starter
I was just wondering. I use Mobil 1 full synthetic in the Porsche, but just got Valvoline Semi-synth for my neon becuase my brother's Advanced Auto had a huge sale for containers with an old lable (as cheap as regular dino oil). I was just wondering what was going into my car though.
I thought it was a bad idea to mix synthetic and regular oil?
Also, I'm debating switching that car to synthetic or not right now because it's getting mainly highway miles, has only 8000 miles on it, and I'd have to change the oil less often.
I thought it was a bad idea to mix synthetic and regular oil?
Also, I'm debating switching that car to synthetic or not right now because it's getting mainly highway miles, has only 8000 miles on it, and I'd have to change the oil less often.