Hello wanted to change to Subaru for the next car due to the comprehensive warranty. Unfortunately there is not the XV with diesel and automatic. Since I drive 40000 km in the year I would have had the petroler converted to Lpg at the Subaru dealer. This told me the guarantee expires but if I do all repairs with him and no other dealer, then this would not be noticeable and the garntie will be preserved. What should one think about it?