what viscosity oil goes in the 1998 t-100 v-6 engine
5W30 or 10W30 depending on where you live. If you have over 75000 miles on it use high mileage oil. i was skeptical at first about using the high mileage oil, but after my first oil change using it I started to notice easier cold start, a little gain in fuel mileage, and the front seal that had just started to leak stopped leaking. HTH
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