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Delvac 1 ESP - VDS 4.5 #5380217 03/19/20 10:08 AM
Joined: Jan 2018
Posts: 334
Brian553 Offline OP
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Posts: 334
This may seem weird, but I had a question regarding whether or not I'm interpreting this right:

Mobil reports that
1. the HTHS for Delvac 1 ESP 5W-40 is 3.8
2. This fluid meets VDS 4.5

https://www.mobil.com/en/lubricants...cants/products/mobil-delvac-1-esp-5w-40/

I looked up the VDS 4.5 spec via the Afton handbook:
https://www.aftonchemical.com/Afton/media/PdfFiles/Afton-Chemical-Spec-Handbook-September-2019.pdf

On page 275, it says that the post-cycling HTHS for xW-40 has to be 3.9 or higher, I believe. I think I'm reading that right, otherwise it's 3.9 for "spec number" 97488-15 (at the top.)
So prior to cycling, it's 3.8, and after cycling its >3.9? it thickened?






Re: Delvac 1 ESP - VDS 4.5 [Re: Brian553] #5382718 03/22/20 09:17 AM
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bismic1 Offline
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Page 275 states that it should be between 3.4 and 3.9 after 90 cycles.


2006 F250 6.0L PSD CC SB FX4
Re: Delvac 1 ESP - VDS 4.5 [Re: bismic1] #5382775 03/22/20 09:56 AM
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bismic1 Offline
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Originally Posted by bismic1
Page 275 states that it should be between 3.4 and 3.9 after 90 cycles.


Spoke too quickly - sorry. To me it looks like the 3.4 minimum is for using test method ASTM D4683 and the 3.9 minimum is for test method CEC L-36-90. The Mobil product brochure states that their number is when using ASTM D4683.

Last edited by bismic1; 03/22/20 10:00 AM.

2006 F250 6.0L PSD CC SB FX4
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