ESP 0w-20 vs 5w-30

Joined
Feb 9, 2024
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Just recently switched and noticed the 30 doesn’t have the green tint that 20 does. Found that interesting and just curious why
 
That’s the reason for the color difference?
VW spec calls for the green dye. It's also supposed to have a marker which will fluoresce under UV light, but I haven't tested it. Think of it like most transmission fluids being dyed red. It helps distinguish between different oils.

I submitted several virgin samples of VW508 oils for testing and they ranged in color from blue to brown-ish straight from the jugs.
 
VW spec calls for the green dye. It's also supposed to have a marker which will fluoresce under UV light, but I haven't tested it. Think of it like most transmission fluids being dyed red. It helps distinguish between different oils.

I submitted several virgin samples of VW508 oils for testing and they ranged in color from blue to brown-ish straight from the jugs.
Ah, didn’t realize that. Thanks for the info
 
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