Amsoil 0w-20 is in

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It's thicker at starting temps and operating temps. Creates more resistance. You're right in that GC is almost a 0w-40. I tried it bc it was such a good oil. Just turned out to be too thick for this engine.

I'm not a huge fan of all of Amsoil's oils, but I do really like the ASL/ATM/ASM.
 
Depending on the viscosity/temperature curve and the startup temperature (could be anywhere from -40 to 120F), it is possible for the 0W to be more viscous (thicker) than a 5W at a particular startup temperature.
 
I noticed better acceleration on my under powered 98 Taurus with the Vulcan engine. I will track my fuel economy.

The last tanked seemed better than ASL, but I need to double check my math and do a larger sample check.
 
Would the 0w have something to do with the Cold Crank Simulator Apparent Viscosity.

The Amsoil 0w-30 starts instant, easy on starter and quick flow. I don't have cold weather, but it turns the engine very quickly with little resistant.
 
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What difference does it make to the engine's clearances with heavier oil weight?

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About the same difference it does to someone who starts their car in on a slightly colder event day. Someone in Canada starting their 0w-20 engine in -30 is probably heavier then someone starting the same car in Texas @ 100+ with a 70 weight.

So, generally speaking, I think we can pretty much reject many assertions in terms of visc and clearances in like engines with grossly varied viscosities as being overly "harmful". I don't see mass grenading of ND, SD, MN, or Canadian engines using 20 weight oils that are surely very viscous @ -25 to -40.

Now the tax on fuel economy? The 0w-20 will (probably) eventually be a 20 weight. The 70 weight will never be a 20 weight.
dunno.gif
 
I'd like to see a VOA of it....

I think I'll send off a sample tomorrow.
 
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Yeah, but does it have Group III in it?


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Who knows, but based on the specs, especially Noak volatility, I'd say NO. Noak seems to be a very good indication of base oils used. For example, PP 5w-20 is 13.5%.
 
I had no idea Pennzoil and Quaker State had such high Noack volatility numbers. Kinda' explains my consumption issues with Platinum. I purchased two Quaker State OCIs-worth to replace the Platinum... now I wish I hadn't... even at buy-one-get-one-free.

Anybody in the Detroit area want six quarts Quaker State Advanced Synthetic 5W-30 - plus six quarts QTorque Power Synthetic 5W-20 at $3 per quart..... buyer take all - or split in two????
Please PM me.
 
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Kinda' explains my consumption issues with Platinum

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That is the reason I didn't try it, although oil consumption can be from many things. I also think that is why many cars consume M1 so much. It has Grp III base stocks which are more volatile.

RL-8%
Ams-8% for 20wt.
 
The Mobil-1 website doesn't even list the Noack volatility for regular M-1 or EP 5w-30.

What are they trying to hide??
Your 9:17 AM post has my vote for post of the day. Thanks for that info - plus the RL Noack #

I know which two oil brands I'll be trying next in my Colorado 4X4.
 
No problem. Just noticed that the 10w-30 ATM has a Noak of 5.4%. Extremely low. Clearly PAO/Ester.
 
I have to agree about the smoothness and quiet. The Amsoil is definitely quieter and smoother through the rpm band over the M1 20 weights.
 
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