Lucas or Redline
www.rxp.com
I met with the president of the company last week and I tried the stuff in my 528e. It seems to work great.
Don
I've heard (and experienced) nothing but good about the Techron and the RedLine.
I used the RedLine shortly after I bought my 318 (86K mi) and it noticeably smoothed out the idle and throttle response. The previous owner had used "discount" gas. Before, blipping the throttle in neutral produced a little stumble. Now it is perfectly clean.
Adding the Redline produced no difference in my other vehicles, but I used Chevron gasoline (with Techron already in it) at least 75% of the time in them, so I guess the Techron worked equally well.
How funny you should post this - I put Chevron Techron FICleaner in my car today! 20 oz bottle was like $12 or something at Advance Auto Parts... It says 20 oz = 20 gallons of fuel, so I went with about half.
Seems to work great... car seemed to be going smoother as I drove around tonight. Whatever product you choose should do a pretty good job... IMHO at least!
Kevin
2000 Toyota Land Cruiser [2020-Present]
2013 Honda Pilot EX [2018-2020]
2003 Audi A4 Avant [2012-2018]
2004 Accord: [2006-2012]
1978 Black 320i [2007-2017]
1995 Boston Green 318is: [2001-2006]
Knoxville, TN
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