Mobil 1 production codes

[sunfire]

Can anyone decipher these Mobil 1 production codes?

0W-20 from PepBoys:

X17C8 5371

5W-20EP from Walmart:

X05C7 5501

 

[PW01]

bump

I'm curious too

 

[LTVibe]

Check out the post by paul_e320 in this thread:

http://www.bobistheoilguy.com/forums/ubb...true#Post843035

X17C8 - Produced in Beaumont, TX plant on March 17, 2008.

Don't know about the four-digit number "5371".