Trans Tune in a 2005 Scion XB Manual Transmission [SOLVED]

I own a 2005 Scion XB. I just went over 190,000 miles. It’s a manual transmission. What’s your recommendation?

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Jim D.
4 months ago

Your 2005 Scion xB uses 75W-90 GL-4 or GL-5 gear lube in the manual transmission and only holds 2 quarts of fluid. I’d recommend using 2-3 ounces of Sea Foam Motor Treatment or High Mileage to clean the internal components of that manual transmission.

If you are using Sea Foam for cleaning purposes before you change the fluid, add the 2-3 ounces of Sea Foam to the manual transmission, drive for 30-50 miles, and change the fluid. When adding new fluid, you can add another 2-3 ounces of Sea Foam.

If you are using Sea Foam for preventative maintenance, just add 2-3 ounces of Sea Foam and drive your vehicle like normal. Then follow Scion’s recommended maintenance schedule for future fluid changes.