What's the difference between the AMSOIL synthetic oils?

[jonlandrum]

AMSOIL shows three oils available for my vehicle: OE, XL, and Signature Series. What's the difference between these three oils?

 

[Quattro Pete]

Quality of base oils.

 

[Schwifty]

Go on their site and download the data bulletins and compare them. OE is just a simple oil, the XL and Signature are their more robust lines, that's where I would do the comparisons at.

 

[ABN_CBT_ENGR]

PM @Pablo

He is a resident Amsoil SME

 

[aquariuscsm]

Afaik,OE and XL are grp 3 based and SS is grp IV based.

 

[Gene K]

Group III OE - 7500 mi -12,000 mi oil
Group III XL - 10,000 mi - 15,000 mi oil
Group IV Signature - Up to 25,000 mi in the correct application.

OE is built for typical OEM Drain Intervals.
XL has a more robust additive package for extended service.
Signature is the best oil they know how to build short of becoming to expensive to be commercially successful.

If you are going to do 6 month - 5,000 mi OCI in a typical passenger car you are unlikely to see a real difference.

 

[buster]

Base oil blends are anyone's guess these days but my guess would be what Gene K has said. SS is simply the best oil they can make at that price point. Based on FTIRs, SS is a PAO/Ester blend. Decent amount of V too. (estimated range 8-13%.)