For the record...the user manual says Unleaded regular gasoline (section 8-1 in the user manual). In Japan regular Gasoline ranges from 92 - 95 ish depending on the brand.
@spectre For all Japanese KYB Excel - G shocks.
For front 13,000 * 2 + 6000 (worn out rubber parts + bushing + service charges)
For Rear 12,000 * 2 + 3000 (bushing + service charges)
Total cost around 59k