Group III Synthetics better than Group IV?

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What about Amsoil and it's 25k miles?
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I think that speaks a lot to - regarding ekpolk's post.

In terms of short OCIs - 7500 - both oils would probably be practically identical to the average joe who ends up trashing his car at 100k anyway. For those of us planning 400,000 miles - group IV+ would be best in my opinion.
 
Local Wally World prices yesterday.

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Castrol Syntec $5.52/qt $21.67/5qt-jug (Group III)

Mobil One $5.68/qt $21.94/5qt-jug

Mobil One EP $6.22/qt $27.52/5qt-jug

Pennz Platinum $3.97/qt $18.97/5qt-jug (Group III)

Shell Rotella T-Synth $15.96/gallon =>$19.95/5qt (Group III)

Super Tech Full Synth $12.34/5qt-jug (Group III)


 
quote:

Originally posted by OriginHacker21:
What about Amsoil and it's 25k miles?
smile.gif
I think that speaks a lot to - regarding ekpolk's post.

In terms of short OCIs - 7500 - both oils would probably be practically identical to the average joe who ends up trashing his car at 100k anyway. For those of us planning 400,000 miles - group IV+ would be best in my opinion.


AMSOIL's Series 2000 0w30 (PAO) says you can use it for 35K or one year (which ever comes first) on the label, I don't know if that implies a warranty or not.
 
quote:

Originally posted by avette:

quote:

Originally posted by sxg6:
I hope its clear that this 10k interval is only for "normal service", not "Severe service" which is what most drivers fall under. 10k normal, 5k for severe.

Yes, I'm aware of that.
And the most drivers don't fall under "severe service".
The last time I checked the majority of drivers accumulate between 10-15K miles per year which contain a fair amount of easy on oil freeway driving.


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I simply disagree. I think most drivers on the road do a lot of short trips where the oil never fully gets up to operating temp for very long, the engine is constantly being shut off and on, etc. If these people who put 10-15k miles on their car did a lot of freeway driving, they'd have more than 10-15k a year. I do a fair amount of freeway driving and i put on 35k a year. Heck, i've put on 31k since late feb.
 
i think this thread is pretty much over

Ron AKA has stopped posting, so he's pretty much done here.

the point that i gathered from this whole thread, is that G-III oils are not some sort of cheap, poopy excuse for a synthetic oil, as many people who are not well-versed in oils may believe. the fact is, they are very good, and probably enough for the average user.

BUT - they are not better than G-IV oils. G-IV oils are still better when it comes down to it all, especially for extended use.

so thats all folks. both are great, G-IV is better, and mostly for the people who really love their cars and like the peace of mind.
 
I have to agree with Ron on the HTHS/Redline issue. tried it twice, and experienced a drop in low end torque, and no increase in fuel economy. Hav. 5w20 gave better low end torque, and better mpg. Maybe it helps with peak power levels, but I did not see the 3% fuel economy increase that Dave at Redline claims other people get, even when I used their 5w20. I'm sure it's excellent for engines that need an extra cleaning factor.
 
quote:

Originally posted by oilyriser:
I have to agree with Ron on the HTHS/Redline issue.

How hard was it for him to get that right? Virtually all the research you'll find predicts it will be the likely outcome, since SM/GF-4 5w20 has a HTHS of 2.6 and RedLines 5w20 has a HTHS of 3.3
 
I hope Ron AKA licks his wounds, girds up his loins, and bursts forth in valient battle, again, soon. Congratulations to the rest of you who took part in what degenerated into a girlish kicking frenzy. Another proud BITOG moment - NOT! (
nono.gif
)
 
quote:

Originally posted by Ray H:
I hope Ron AKA licks his wounds, girds up his loins, and bursts forth in valient battle, again, soon. Congratulations to the rest of you who took part in what degenerated into a girlish kicking frenzy. Another proud BITOG moment - NOT! (
nono.gif
)


Your on his side? Apparently you haven't been on the receiving end of his insults in other threads.

Please take me off your fan list Ray H.
 
Ok, ok, SLOB is Street Legal (High Performance) Oil Boost. Loaded with Calcium, Boron and ZDDP. Picks up the additive package of SM-rated oil. As these additives are based in a fairly light carrier oil, it is in some favor with folks here as it doesn't thicken the oil as does VSOT.

Has a nice price, too.
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Sorry. for the ot..
 
quote:

Originally posted by ekpolk:
OK, if the G-IIIs are that good, then where is Castrol's G-III Syntec that is recommended for 15k miles.

We are talking here about the car manufacturer's recomendations, not the oil producer's staments, ads etc.
 
quote:

Originally posted by sxg6:
I hope its clear that this 10k interval is only for "normal service", not "Severe service" which is what most drivers fall under. 10k normal, 5k for severe.

Yes, I'm aware of that.
And the most drivers don't fall under "severe service".
The last time I checked the majority of drivers accumulate between 10-15K miles per year which contain a fair amount of easy on oil freeway driving.
 
quote:

Originally posted by avette:
You make it sound like the PAO's are still ruling the world and the GroupIII oils remaining a niche segment.
Isn't it the other way around?
The PAO based oils are increasingly becoming a niche product and only able to hold a significant market share because of Mobil1's still tremendous name recognition.
With the crude prices coming down like a rock and continued advancements in the hydrocracking technology, PAO based Mobil1 will just outprice itself out of the general market.
The writing is on the wall.


Crude prices "coming down like a rock?" When? for how long? The end of the summer driving season? LOL With all due respect avette, I'd like to know where all these cheapy Group III based synthetics are. The only one that comes to mind is the partial synthetic lines of Conoco-Philips (KendallGT1, Motorcraft, and perhaps TropArc).

Just looking over the five-quart jug of synthetics selection at Wal-Mart, I'd hardly call Castrol SYNTEC "cheaper" than Mobil1, in fact often the reverse seems to be true. Pennzoil Platinum (unless you get the rebate at PepBoys), QS, Valvoline, and Shell Rotella 5W-40 are only marginally less expensive. Even Rotella syn., which is often heralded as a cheap but quality synthetic here, will cost you roughly $16 for a four-qt jug, and an extra quart will cost you about $4.34. So, in reality, you're saving about $1 over Mobil1 which, is about $21+ a jug I think.
I've noticed that the opposite of what you say may be true, in fact, perhaps the overall rise in the price of crude has resulted in mineral based engine oils actually being more expensive overall, cutting into the profit margin of a reduced-priced Group IIIs, which again, I've seen limited evidence of. In fact, it seems like the GroupIIIs are the ones rising price wise.
 
quote:

Originally posted by avette:

quote:

Originally posted by ekpolk:
OK, if the G-IIIs are that good, then where is Castrol's G-III Syntec that is recommended for 15k miles.

We are talking here about the car manufacturer's recomendations, not the oil producer's staments, ads etc.


No, the issue in this thread is whether "Group III Synthetics [are] better than Group IV". The fact that Mobil recommends a PAO oil for 15,000 miles use, and stands behind it with a warranty, while neither Castrol, nor any other seller of a G-III syn, offer anything similar for their products, speaks volumes about the G-III vs IV/V comparison.
 
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