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Old 12-17-2021, 10:19 AM   #7 (permalink)
hayden55
Master EcoModder
 
Join Date: Dec 2010
Location: USA
Posts: 1,170

Sport Utility Prius - '10 Toyota Prius II
90 day: 52.98 mpg (US)

300k Sequoia 4WD - '01 Toyota Sequoia Limited 4wd
90 day: 20.19 mpg (US)
Thanks: 352
Thanked 265 Times in 212 Posts
The closest thing I've done to a flush was a couple very low mileage oil changes and it seemed to work. I would try that instead. Not even close to as risky either.
Try like 1500-3000 mile changes with syn.
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