Another What Oil do u use thread

[Ccmano]

Originally Posted by HAWAIIZR-1

Hey Dom,

Due to my location in Japan and even when I was in Hawaii I’ve also looked for alternatives for oil. Last year I liked what I read about Liqui Moly from Germany and gave it a try. I love it so far and no more chain rattle at start up too. I also use it in the Audi and the Benz (different blend and full synthetic) and will probably convert the Harley at the next oil change.

I think there are a lot of opinions and thoughts about the best oil or safest for our motor. I’ve read some old timers have been using regular M1 10W-30 as specified by manufacturer since new and no issues.

If the demise of my LT5 comes with using this oil so be it. So far I love it and redline on a regular basis so I’m not worried. I buy Liqui Moly with free shipping from Amazon ($34 for 5 liters) no matter where I’m living so I love it. I’m not for or against any oil a member uses and just sharing what I’m using even if I’m the only one and don’t care what others think. Yes, this one is not a full synthetic and I change my oil annually regardless of miles. Best wishes with your choice.

Here is an email from one of their engineers:

Dear Craig,

thank you very much for contacting us and your interest in our LIQUI MOLY products.

ZDDP (Zinc Dialkyldithiophosphates) have been a common AW (anti wear) additive comination in the past but have been more and more replaced / displaced by more modern chemical AW and EP (extreme Pressure) additives in modern motor oil formulations due to enviromental regulations and new developed additives.
The API (American Petroleum Institute), ACEA (European Vevicle Manufacter Assosiation) and the vehicle / engine manufacters itself regulate the maximum amount of ZDDP within the motor oil classifications. So as soon as a engine / vehicle manufacter ask for a specific motor oil classification the amount of ZDDP is not decisive, the OEM given specification rules.

Further : it´s never the amount of a single additive that indicates how good one feature (e.g. the wear protection) is. It´s always the combination of several chemicals (the additive package) that gives a oil it´s properties.

Please understand that we do not publish the exact composition of our product formulations. It´s our company´s secret but the specifications and approvals of each of our products are written in the product information which you can find attached to this Email.

For your LT5 engine we recommend you to use our #LM2043 MoS2 Antifriction SAE 10W-40 which is a special development from us made for proven engines from the early 1970´s till the end of the 1990´s. Beside a semi-synthetic base oil, a special additive package (with a Zn amount of approx. 1300 ppm) it also contains the proven additive MoS2 for maximum protection.

Please see the attached product information.

Attachment 9914

We hope we could help you with our information. Should you have further questions regarding our products we would be very pleased to get contacted from you again.

Best regards

i. A. Steffen Niemietz
Anwendungstechniker
application engineer

F & E / Anwendungstechnik

Phone: +49 731 1420-658
Mobil: +49 162 2815064
Fax: +49 731 1420-44658
steffen.niemietz@liqui-moly.de

LIQUI MOLY GmbH
Jerg-Wieland-Straße 4 | 89081 Ulm | GERMANY

www.liqui-moly.de



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[HAWAIIZR-1]

Originally Posted by Ccmano

I don’t question German Engineering!!! 👍🏻🤙🏼

[Ccmano]

Originally Posted by HAWAIIZR-1

I don’t question German Engineering!!! 👍🏻🤙🏼

I was going to say... that’s the most intelligent thing I’ve see on this subject it some time!
H

[-=Jeff=-]

Why don't you use Amsoil? You can get it from Marc.. I use Amsoil in all my cars now

[Paul Workman]

Originally Posted by XfireZ51

Always an interesting topic. I would agree w Hans in that thread, that the seat and spring pressures our motors experience(a benefit of 4v OHC architecture) don’t reach what the LS/LT motors need to run for the in-block cam setup to breathe as well. So the need for ZDDP not as great and I think we have examples of being able to “get away with” lower ZDDP content.

Seat & spring pressure advantage goes to the DOHC configuration, true. But, they (LS motors) ALSO use roller lifters, and it is those flat rappet lifters combined w/ rpm potential (not fogetting the force required to overcome (valve/spring) inertia increases @ the square of the RATE of the change of motion (speed).

According to LT5 research contained in a paper Marc Haibeck published and delivered too (in BG), ZDDP levels in the 1100/1200 ppm for zinc/phospherous was the spec @ the time the LT5 was first produced. (And, speaking of SPEED, one guess what affect reground cams has on the force (i.e., the scuffing) has on those flat tapper surfaces...)

My point is, I don't see the science in this thread to support reducing ZDDP further w/o proper scientific evidence to support such a conclusion.

Lubrication failure on our lifters is insidious. Therefore it is impractical for we lay ppl to attempt to establish MTBF trending for rhe various (ZDDP) levels. Therefore, for an individual to experiment with reducing ZDDP, one assumes the soul risk with the good luck wishes of us all. Like that famous old cereal (sp?) food commercial: "I'm not going to try it...YOU try it. Wait! Let's get Mikey (a third kid) to try it!"... pause while Mikey tries the new cereal...
"He likes it! ... Hey Mikey!"

Or, as they said about pioneers: "You can recognize the pioneers by the arrows in their backs!" Try lowering ZDDP?

[Young1]

My next oil change this year shall be with Brad Penn 10w40.

[Paul Workman]

BTW... weren't you high on Rotella @ one time?

[lfalzarano]

Paul, you can lead a horse to water, but you can’t make him drink.


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[XfireZ51]

Thought I would post an update. I drained the Mobil 1 High Mileage and replaced oil filter, then put in a fill of Mobil 1 15W-50. Having driven about 300mi. now with it, I can see a significant difference in the exhaust. Previously, I had a black sootiness on the exhaust tips that accumulated rather quickly. After having driven it, the exhaust tips have a thin coloration on them but I can still see the chrome shine through the film coating. Motor appears to be running much cleaner so far. Pressure etc. are all good or a bit better than previous.

[Meanmyz]

Originally Posted by lfalzarano

Paul, you can lead a horse to water, but you can’t make him drink.


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After reading this thread, I guess so. I am kind of surprised. I will stick with Amsoil AMO 10W-40.