Do you think that chevron techtron fuel system cleaner (that claims to be o2 sensor safe) could harm the VX 5 wire O2 sensor? I just added some to my VX, but I am replacing the O2 sensor in a week (5 wire L1H1), so i thought I would try it out with the old o2 sensor in. should I run all of this fuel out before I put in the new O2 sensor?
I have ran both through my VX with no adverse affects. My O2 is still wide awake and Happy. In fact I had a chance to pull it out out this week and look at it. It was super clean for the 5K miles that it's been in the car now.
I've used a few fuel system cleaners, including seafoam, and gumout, and haven't had any problems with my 5 wire o2 sensor, and have about 20,000 miles on it.
I have been reading about Seafoam and you almost want to put it in just for the idea how much cleaner the engine will be afterwards, but is it recommendable when there really aren't any complaints about how the engine runs? Will it run even better afterwards? Is there a return in mpg that is worthwhile?
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