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Downtown 300 / Castrol 4T 10W-40 Motorcycle Oil in my 2005 250cc Grandvista scooter.
« on: February 15, 2012, 05:02:14 AM »
I use Castrol 4T 10W-40 Motorcycle Oil in my 2005 250cc Grandvista. The scooter runs like a watch now, consistently and evenly at low speed and RPM. Acceleration is better, quicker. It just runs better! Castrol is half the price of the Mobil 1 4T motorcycle oil. It cost $1 more than regular car oil. Commonly available.