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Amsoil 5w40

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dan2288

dan2288

15+ Year Contributor
577
1
Sep 9, 2006
Shillington, Pennsylvania
Anyone run 5w40 oil in their dsm? I have 10w40 in now and what something tinner at startup. Amsoil states that its formulated for european cars. Will I be ok running it in my talon?
 
use a synthetic oil, it has the best startup viscosity. Pretty much any 30 weight oil will run the same viscosity at normal operating temps, but 90% of engine wear is during startup so you want a nice thin oil for that.

This is where synthetic comes in, it has a great cold viscosity.

After research I have no brand preference, but that 0w-30 to 10w-30 in synthetic form is the best oil.

So for your question, yes if its a synthetic I see no reason to run it.
 
Course the reason a lot of us, and what factory recommends to use, uses 10w30 is that our turbo motors have looser tolerances than regular NT motors which can easily handle the thinner oils.

If you live in Alaska where things are really cold, then the thinner oils would suffice.

Oh, and the "W" means "winter" viscosity.

-DSM
 
:rolleyes: Wanna listen to someone who knows tonnage about a Ferrari than a DSM?

Ferrari motors are designed to be super tight to handle such thin viscosities of oil being that they can rev up to the unknown reaches of the universe and need any form of less resistance, if possible, to reach that plateau.

Granted, the lower the first number does contribute to flow as stated since it's thinner, but really, do any of you want to take that chance of using a oil that really isn't designed for our motors?

Sounds like a link that doesn't belong in this DSM forum...very misleading information.

I'll just stick with good ol' 10w30 Amsoil

..whatever floats your boat though ....

-DSM
 
I used to be a dealer of the stuff...and paid like half price so i always used it in my old car. After 115,000 miles the mechanic i had look at it before i sold it said the engine looked AMAZING. And that he very very rarely see's one in such great shape for the miles.....so i stand by my word saying Ams Oil is the best....

^^ and doesnt sound like it belongs in the forum? Did you even read any of it? A great deal of it is just teaching about the motor oils and viscosity. It doesn't talk about just reving up to 9k all day.... Before you talk and say its misleading make sure you read. It covers a wide range of motor oils and he discusses where they break down, when the motor needs the oil most, what makes them different and everything in between. So please before you say its not good...read. Im still personally sticking with my 10w30...but its still a good article.
 
so i stand by my word saying Ams Oil is the best....
Click to expand...
.. can we then drift off topic a bit here on this with all synthetics: You here all about all of the other brands saying that their product does this and that and a lot of users swear by Mobil 1 with a host of others. Now, what makes AmsOil stand out above the rest - what is their secret that can be done over other makes?

Course, I also use Amsoil in my newer vehicle-plan on keeping them running for a long time..

(Sorry on my overzealous blurb...)

-DSM
 
Mobil 1's good. On my stock 4g63's, I've always used 5w30 Mobil 1. I've never shown adverse bearing wear with that viscosity, even during 100+ heat outside. Every oil analysis I've ever done has came back clean as a whistle with the stuff - you can't shake a stick at that.

With that being said, it's impossible for any API-rated passenger car oil meeting the current API standards to have the same potential as Amsoil Premium. Since Amsoil Premium isn't rated by API, they can use anti-wear additives that are no longer permitted in off-the-shelf passenger car oils. It's absolutely fantastic stuff.

This article helps better explain the advantages of using non-API approved formulations:
AMSOIL API Licensing
 
Im curious to see how castrol edge and valvolines new formula compares to amsoil and mobile 1.
 
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