[rhudeboye]

Title should read on my favorite oil.

http://www.automobilemag.com/green/news/09...nomy/index.html

While you're considering an oil change, you may also want to switch to a new type of oil filter that can help dramatically extend your oil change intervals. We covered the MicroGreen two-stage oil filter earlier this year and have been using them on a couple of test vehicles. So far, so good. With this filter and a high-quality synthetic such as Royal Purple, you should be able to drive a minimum of 12,000 miles to a maximum of 25,000 miles on the same new oil you install at this service.

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[Gotter]

<!--quoteo(post=75877:date=Jul 21 2009, 12:47 PM:name=rhudeboye)-->QUOTE (rhudeboye @ Jul 21 2009, 12:47 PM) <{POST_SNAPBACK}><!--quotec-->Title should read on my favorite oil.

http://www.automobilemag.com/green/news/09...nomy/index.html

While you're considering an oil change, you may also want to switch to a new type of oil filter that can help dramatically extend your oil change intervals. We covered the MicroGreen two-stage oil filter earlier this year and have been using them on a couple of test vehicles. So far, so good. With this filter and a high-quality synthetic such as Royal Purple, you should be able to drive a minimum of 12,000 miles to a maximum of 25,000 miles on the same new oil you install at this service.<!--QuoteEnd--><!--QuoteEEnd-->

[img]style_emoticons/<#EMO_DIR#>/blink.gif[/img] [img]style_emoticons/<#EMO_DIR#>/blink.gif[/img] [img]style_emoticons/<#EMO_DIR#>/blink.gif[/img]

Seems almost improper to even suggest it! I trust the advice, but when you've had the 3,000 mile rule embedded in your brain your whole life...

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[rhudeboye]

[img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img] Wouldn't try it myself. But these guys are doing some very real world testing with these oils and filters. What can I say, technology advances.

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[ds968]

IMHO, the 3000 mile rule is among the biggest brainwashing scams perpetrated on the American public, solely designed to benefit the engine oil companies, car dealers, the gas station repair shops, etc, etc. Even with the old conventional oils no independent tests have really managed to prove beyond doubt the benefit of such frequent changes, or conversely prove the risk of failing to follow that "rule" by attributing engine wear primarily to that factor.

IIRC, Castrol created a huge fiasco in the late 70s stating that oil changes at double or even triple the mileage prescribed by conventional wisdom may be a waste and won't materially affect the car's engine in the long run, assuming everything else in that engine works fine.. they were quickly compelled to shut up and retract that statement.. the oil certainly loses viscosity and various other propensities with more miles and age, but it's the actual adverse effect ( if any ) of that has been the subject of much heated debate..and doubt.

With synthetic technology, even the folks at Mobil, or Royal Purple, or Amsoil will publicly admit 15,000 mile intervals
are adequate, which means in private they'll probably admit 30,000 miles are perfectly fine..
You're certainly not going to hurt a car by changing oil every 3k miles, but if you're doing that with synthetics it's even a bigger waste than it was with conventional oil.

Just anecdotal info, but I used conventional ( mostly ) Castrol GTX in my 944, with changes every 12,000-15,000 miles and that's when and if I got around to it.. sometimes it may have been 20,000 miles. The engine was running absolutely perfectly when I sold the car with more than 250,000 on it.

Ok, off my soap box now [img]style_emoticons/<#EMO_DIR#>/dry.gif[/img] [img]style_emoticons/<#EMO_DIR#>/rolleyes.gif[/img]

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[flash]

i just got through doing more reading on oils not two weeks ago - found some interesting stuff, but did not like what i read about royal purple

i've been running redline, and while amsoil also looks good, given that i have now had mishaps that have run the car completely out of oil at least twice (i think it has been three times but i'm now a bit dizzy about it) and the fact that no damage has occurred, coupled with the freer revving and cooler running that i picked up when i made the switch from mobil 1, i think i am sold

i've been sold on the canton filter for years, as again, no damage, and easy changing

the other stuff may work well, but i'm REALLY happy with what positive results i've had

as for changing interval, i do the "sniff test" and "paper towel test" for that - it really has nothing to do with time or mileage, but rather the cleanliness of the oil - i probably change it more than i need to, but i also attribute my successes in the presence of total system failure to the fact that the oil is ALWAYS clean

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[ds968]

<!--quoteo(post=75887:date=Jul 21 2009, 04:03 PM:name=flash)-->QUOTE (flash @ Jul 21 2009, 04:03 PM) <{POST_SNAPBACK}><!--quotec-->i given that i have now had mishaps that have run the car completely out of oil at least twice (i think it has been three times but i'm now a bit dizzy about it) and the fact that no damage has occurred, coupled with the freer revving and cooler running that i picked up when i made the switch from mobil 1, i think i am sold

i've been sold on the canton filter for years, as again, no damage, and easy changing

the other stuff may work well, but i'm REALLY happy with what positive results i've had<!--QuoteEnd--><!--QuoteEEnd-->


Yup, no better testimony than one's own experience with a brand which has proven to work well during and post stressful conditions.

In my case I'm sold on Amsoil's qualities and will continue to use that.

I found the revving to be faster changing from Mobil 1 also, but I went from a Mobil 15-50 to Amsoil 5-40, so pretty sure it had little to do with the brand itself.. I just switched though to half 10-40, and half 5-40 mix ( all Amsoil of course ) because their 10-40 allegedly has by far the biggest amount of ZDDP of any other oil brands and thought
I should give it a shot, even at the risk of revving a millisecond slower perhaps..

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[rhudeboye]

<!--quoteo(post=75887:date=Jul 21 2009, 05:03 PM:name=flash)-->QUOTE (flash @ Jul 21 2009, 05:03 PM) <{POST_SNAPBACK}><!--quotec-->i just got through doing more reading on oils not two weeks ago - found some interesting stuff, but did not like what i read about royal purple<!--QuoteEnd--><!--QuoteEEnd-->

What exactly was it that turned you off from RP?

I went form RP back to Mobile 1 on my last change and noticed the difference, Revs didn't move as quick. I plan on draining the M1 and going back to RP this weekend.

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[flash]

it was standard 4 ball tests and such - it just wasn't as good as redline or amsoil, by a fairly good margin - noack volitility was also not what i wanted

also i believe the zddp levels were unsatisfactory

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[tom968]

I change my oil about once a year. When I can I use
lubromolly, a German oil. The place I buy it from also
sells redline. I may try it next time.

You have to search a bit to find redline or amsoil
as your local parts store doesn't carry it.

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[rhudeboye]

I'd love to read a comparison test that's not run or sponsored by one of the companies in question. Amsoil has really flooded the web with there tests. So when you type in "redline royal purple amsoil compare review" you get the following:

http://www.enhancedsyntheticoil.com/Royal_...e_vs_AMSOIL.htm

http://www.worldsbestoil.ca/dyno-test.php

http://www.performancemotoroil.com/Redline_test.html

Note the 3 different names for the webpages. However as you go to each website, with the hope of finding independent testing, the top banner makes it clear that the page is owned by Amsoil. Judging by the 4 ball test on these pages quaker state and M1 beat Red line.

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[Ryan]

If you are going to use regular oil.....use oil made for DIESELS. These oils have more of the good additives that longer oil changes require.

I know a courier service here in town has done there own test on their fleet and using regular oil they change at 5k and find no adverse affects.

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[flash]

yeah - i know which tests you are talking about - amsoil has done a great job of marketing those particular results - however, it's pretty hard to skew them - they did do a pretty good job though of not matching up the same viscosity ratings of oils, so i tend to question the particular results

i've seen a lot more than the ones that are out there right now - they keep disappearing though - not sure what that's about - i have also read quite a bit about the different oils, and royal purple kept popping up associated with problems, more than the others - no idea if the problems really had anything to do with the oil itself or not, but given that i had to make a choice, and no definitive data available, i figured "where there is smoke, there is fire" and took that one out of the running

the other reason i prefer redline is the higher moly content - that is the best thing you can get for protection, and given my results, i'm happy

i can thank dave greimann for that info - he was the oil guru that really got me into it a number of years ago

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[banditsc]

I was running Mobil1 15w40, then switched to Redline 10w40. Now that Mobil1 has fixed the ZDDP levels in the 15w40 oil I was thinking of going back. The Redline stuff is a bit pricey, and I'd like to keep one oil around for both the 968 and 928, the 928 takes almost 9 quarts. I noticed the Amsoil is a little cheaper then the Redline for the 10w40, but then noticed they have a premium 10w40 which is inline with the Redline cost. Guessing the premium is the one with all the ZDDP.

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[flash]

yup - pain in the butt - i am still trying to find somebody closer to me - so far, it's 15 miles away

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[banditsc]

Nobody local that I know of for Redline, so it's shipping for me. But shipping fees would probably be about the cost of the taxes on a large order.

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[ds968]

<!--quoteo(post=75921:date=Jul 22 2009, 07:08 AM:name=flash)-->QUOTE (flash @ Jul 22 2009, 07:08 AM) <{POST_SNAPBACK}><!--quotec-->the other reason i prefer redline is the higher moly content<!--QuoteEnd--><!--QuoteEEnd-->

moly is good stuff for sure, but I hear it has one drawback - it causes the oil to darken very very fast, so if you rely on the oil' appearance alone, without the "sniff test" , it can be jet black after just a couple of thousand miles and
scare some into changing it ( unecessarily ) ..

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[flash]

i haven't had that problem yet, but that's also why i use the paper towel, and not just the dipstick for a look - you can see the true color of the oil on the towel - it doesn't really make sense that it would get any darker any faster, but it does make sense that it would start out darker, and that i did notice right away - if you didn't pay attention to that, i can certainly see where somebody might think it was getting darker faster

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[rhudeboye]

<!--quoteo(post=75936:date=Jul 22 2009, 10:14 AM:name=ds968)-->QUOTE (ds968 @ Jul 22 2009, 10:14 AM) <{POST_SNAPBACK}><!--quotec-->moly is good stuff for sure, but I hear it has one drawback - it causes the oil to darken very very fast, so if you rely on the oil' appearance alone, without the "sniff test" , it can be jet black after just a couple of thousand miles and
scare some into changing it ( unecessarily ) ..<!--QuoteEnd--><!--QuoteEEnd-->

Ya know, in my search for a comparison I read a blog where people were saying just that about Redline. 1 week after the change users commented that the oil was black.

I have been happy with RP but I'm willing to experiment with others should I get a good enough reason. So far I've heard nothing negative about Amsoil. may just have to grab 6qts or a case if I have to ship it.

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[flash]

i wonder if they bothered to check it right after the change? it is definitely a darker oil right out of the bottle than any other i've ever seen

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[firefish]

I pretty picky about color (of oil that is). Poured redline in the trans and it had the sweetest golden color. The Brad Penn that got into the engine was green!?! and I have never seen that before. It stated "the Green Oil" on the bottle but I assumed that it was something to please the environmentalists...

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