Breaking in a new Yaris - Toyota Yaris Forums

hystria · 04-14-2007, 08:22 AM

engine: very small roughness on metal surface, will whip off in the first 1-2 hundred miles

oxygen sensor (sets the fuel/air mixture, therefore affects acceleration and fuel consumption): when new, it needs to get "burned" in order to operate to the specs. The hotter it gets, the faster it burns. I'd suggest, passing the first hundred miles, start shifting/keeping the revs higher than usually (above 4000rpm) and drive so 2-3 gas tanks.

don't switch to synthetics before 1000 miles, a new engine needs to run on mineral oil

jlift · 04-30-2007, 02:58 PM

Quote:

Originally Posted by hystria

don't switch to synthetics before 1000 miles, a new engine needs to run on mineral oil

Well, why then do some new cars come from the factory with Mobil 1 synthetic in them? I don't think that statement is accurate at all.

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04-14-2007, 08:22 AM	#1
hystria Drives: 2007 Orange Yaris Hb 3Drs Join Date: Dec 2006 Location: Montreal-Canada Posts: 262	engine: very small roughness on metal surface, will whip off in the first 1-2 hundred miles oxygen sensor (sets the fuel/air mixture, therefore affects acceleration and fuel consumption): when new, it needs to get "burned" in order to operate to the specs. The hotter it gets, the faster it burns. I'd suggest, passing the first hundred miles, start shifting/keeping the revs higher than usually (above 4000rpm) and drive so 2-3 gas tanks. don't switch to synthetics before 1000 miles, a new engine needs to run on mineral oil