From:
https://www.mobil.com.au/en-AU/our-fuels/faqs
At Mobil,
it’s all about the details and bringing quality fuels to every driver, all across Australia.
That’s why we’re committed to getting
performance enhancing additives* into every pump across Australia.
*At selected sites only
Supreme+ 98 (98 Octane) is a premium grade petrol
enhanced with a high quality multifunctional additive package
The additive is designed to improve engine performance by helping vehicle engines run more smoothly.
We use higher levels of detergent in Supreme+ 98 for even greater performance.