Amsoil 10W40 in a PSD

[Bio-T]

I have used Amsoil 15W40 HDD and 5W30 HDD but I have no experience with the 10W40. How does this compare to the other 2 oils mentioned as far as additives, anti-foaming agents, and use in a Ford PSD. I have never seen an analysis on any PSD using this oil, but have seen tons with the 5W30 and 15W40, which were all good.

 

[TooSlick]

Not the stuff to use here, but fine for automotive diesels like Mercedes and the VW TDI. Amsoil does not consider this a HD diesel oil ....

They are using the CI-4 add pack so it works better in wet clutch motorcycles ....

Ted

[ November 01, 2003, 09:38 PM: Message edited by: TooSlick ]

 

[Bio-T]

Ted,
Thanks for the info. I do have 22 quarts of the 5W30 HDD left for my 01 PSD next oil change. I was just looking down the road and it seems that the 5W30 HDD is the best for me to use.
Very nice to get an answer so quick, as all I looked at was the CI, not considering the other variables. Again Thanks.

 

[TooSlick]

Updated specs for the Series 3000, 5w-30:

Vis @ 100C, 11.5 Cst
Vis @ 40C, 63.8 Cst
VI, 176
CCS @ -25C, 5012 Cp (was 6100 Cp)
PP, -60F
FP, +457F
Noack, 6.5% (was 8.6%)
HT/HS > 3.5 Cp
Four Ball Wear, .40 mm
TBN > 12.0

The S3000 is more shear stable than the 10w-40 and I like it a lot better for the PSD application. I also think it's their best gas engine oil right now....

Ted

 

[FowVay]

Ted, why do you say that this isn't the right oil for the PSD? What would be detrimental in using the 10/40 over their 15/40?

Other than the fuel injectors, why would a PSD be any different than any other diesel?

 

[TooSlick]

John,

IMHO, the Amsoil 10w-40 isn't shear stable to use in the PSD engine, due to the very high pressure, hydraulically actuated fuel injectors ....

The 15w-40 uses a heavier, more stable basestock blend than the 10w-40 and less polymeric thickener. The Amsoil S2000/S3000 use a more expensive and extremely shear stable VI modifier that is not used in the 10w-40.

Ted

 

[msparks]

On the shear stability, how would the 10w40 compare to Delvac 1?

We have seen similiar oil analysis comparisons on the TDI, but not much in the PSD.

Going out on a limb, I would say you would see similar performance of the 10w40 to Delvac 1.

Though I do agree with Twoslick, that the 15w40 is a better oil for both motorcycles and Diesels than the 10w40 and it's less expensive as well(they do more volume of the 15w40 than probably any other individual Amsoil product.)

 

[msparks]

Question would be could you get a 10k oil drain out of the PSD and the 10w40?

 

[TooSlick]

Mike,

Based on all the VW TDI data I've seen, I'd say Delvac 1 would have a slight edge when it comes to shear stability ....That's why I'd prefer the thicker Amsoil 15w-40 for the PSD.

Amsoil really does not consider their 10w-40 to be a HD diesel oil. This oil and "ARO" were reformulated in 1998 to make them work better in motorcycles. That's the primary reason why they are using the SL/CI-4 additive chemstry - to reduce high temp piston deposits in air cooled motorcycle engines.

The amsoil 10w-40 is a high performance oil for gas/diesel engine passenger cars and motorcycles with wet clutches, not Mack trucks. It's more like the Mobil 1, 0w-40 and not Delvac 1 ....