Red Line 5W30 vs. 10W30 and shearing

[Bruce T]

harrydog, Dave at Red Line told me their 5W30 contains no VII. I have no reason to doubt him. For another reference, see below, where Jeffrey Behr says, "I am the source for the Red Line Viscosity-Index-Improver info, and Red Line is my source. Dave Granquist told me in writing that the 5W-40 is the only Red Line oil that uses any VIIs."

[URed Line]http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=005972#000018[/URed Line]

MolaKule says, "Redline uses a large amount of PE polyol esters that have a large inherent VI."

[URed Line]http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=001359#000021[/URed Line]

I think Red Line 10W30 is still a first class choice, but it lacks any unique functions compared to their 5W30.

TheFuror, I agree with you. Not every company's 5W30 synthetic outperforms their 10W30 synthetic, so you should still take it on a case-by-case basis. For example, you mention the fact that Mobil 1 10W30 is more shear resistant than their 5W30, so you wouldn't choose Mobil 1 5W30 unless it's very cold weather.

[ September 01, 2004, 04:24 PM: Message edited by: Bruce T ]

 

[mf150]

BruceT- as always, thanks for your imput.

I agree with you and patman about the redun. of 5W30 vs. 10W30 in the RL line.

 

[TheFuror]

quote:

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Originally posted by Bruce T:

TheFuror, I agree with you. Not every company's 5W30 synthetic outperforms their 10W30 synthetic, so you should still take it on a case-by-case basis. For example, you mention the fact that Mobil 1 10W30 is more shear resistant than their 5W30, so you wouldn't choose Mobil 1 5W30 unless it's very cold weather.

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I completely agree with this analysis, and because of it I have re-thought my position on what oil to run.

The service writer at the local Chevy dealer made a very big deal about 5w30 being the preferred oil for the new vehicles, mentioning that camshaft bearing clearances require it. He stated that while one could "get away" with running 10w30 in warmer weather, the preference was still for 5w30.

I originally was going to use Syntec, as the 10w30 numbers looked quite good. However, I really didn't like the 5w30 numbers, especially the borderline HT/HS rates. Mobil 1 seemed to have pretty good numbers for their 5w30 but when I looked at it closely, Kendall GT-1 synthetic seemed to have even better numbers for 5w30.

I am such a dinosaur when it comes to OCI that I would never sleep well at night if I went much longer than 3K miles, hence I am not it willing to pay the price for Redline oil, even though it looks like it is a very good oil.

I know, pretty dumb to be willing to spend $5 a quart but not $7.50. I never said I was smart, just ugly....

Bob W.

 

[Bruce T]

Yeah, the manufacturer's recommendation for viscosity should outweigh any dealer. Anyone who disregards their guidelines had better have a LOT of knowledge and experience going for them - a lot more than me. The liability (ethically much less financially) is huge. If the 5W30 is "preferred," he should show you the proof in the owner's manual or a manufacturer's service bulletin! I don't know much about Syntec and Kendall, except not every oil with good specs performs well. You might search this section, as well as Used Oil Analysis, for more information.

Yep, I'm also a dinosaur when it comes to short OCIs. To me, the engine is expensive and the oil is cheap. Haha, I'm BOTH dumb and ugly! Why should I deprive my friends and neighbors of a good source of amusement?

[ September 03, 2004, 03:17 PM: Message edited by: Bruce T ]

 

[MolaKule]

The 5W30 would be the better all-around choice for daily drivers.

The main difference between the Red Line 5W30 and the 10W30 is the choice of base fluid viscosites in the mix. The additive package is the same.

As another poster stated, the 5W40 is the only Red Line fluid with VII's, but it is minimal.

See also:
[URed Line]http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=007957;p=1#000005[/URed Line]

 

[TallPaul]

quote:

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Originally posted by MolaKule:
As another poster stated, the 5W40 is the only RL fluid with VII's, but it is minimal.

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So in all but the most extreme uses the 10w40 Redline is probably unnecessary too.

 

[satterfi]

quote:

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Originally posted by MolaKule:
snip
The main difference between the Red Line 5W30 and the 10W30 is the choice of base fluid viscosites in the mix. The additive package is the same.

snip

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Red Line claims the 10w30 meets CH-4/CI-4 specs. They don't make that claim for the 5w30.

If the additive packages are the same, I'd guess both either meet CH-4/CI-4 or both don't.

Any thoughts on this?

 

[slider]

quote:

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Originally posted by satterfi:

quote:

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Originally posted by MolaKule:
snip
The main difference between the Red Line 5W30 and the 10W30 is the choice of base fluid viscosites in the mix. The additive package is the same.

snip

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Red Line claims the 10w30 meets CH-4/CI-4 specs. They don't make that claim for the 5w30.

If the additive packages are the same, I'd guess both either meet CH-4/CI-4 or both don't.

Any thoughts on this?

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The analysis results I've seen on the 10w30 tend to show higher calcium levels.