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Senior Member
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Join Date: Jul 2011
Location: St. Louis
Posts: 1,075
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Senior Member
Join Date: Jul 2011
Location: St. Louis
Posts: 1,075
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I had my E85 turbo Volvo motor apart several times (ahem, part of why I eventually turbo LS swapped it, the Volvo motor was pretty stressed putting out 350 whp). And there was never any particularly noticeable carbon buildup. You'd mostly get that from running stupidly rich most of the time, or from burning oil. Nothing about the fuel itself would tend to make more carbon and buildups (that I know of).
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'99 Highlander 5-spd manual e-locker no-running-board
SS 3" suspension lift/1" body lift/33" tires/'Snowflake' TRD Taco wheels/231mm Tundra brakes/bumpers/armor/sliders/winch/Sherpa Matterhorn rack
Manual front hubs, NWF Eco-crawler transfer case doubler, second gas tank
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