[2001 ZTS]

I'll second Krown and reapply every year. Have done on both cars since new. What is more unsightly oil drips for a few days or rust forever?

If it is a leased car or you if you own and are going to keep it <7 years don't bother. If you are going long term if, just as their advertising says, the rust control keeps you in your car for just one year longer it will save you many $1000's.

I'd still have my old car if it was rust checked but I got it used and never was.

The best Krown shop of many I have tried is in Mississauga, Lakeshore east of Hurontario north side turn at the Midas Muffler shop. George will take care of you. If you are anywhere within 100 miles you should seek him out.

As an example I had my first application done elsewhere but he said they missed some of the harder to reach places and at no charge drilled out some extra holes.

Don't fear the drill!