task, thats nothing new. Dealers will always void warranty claims when a part has been damaged by something aftermarket... it makes sense. All depends if you BELIEVE the stanadyne is helping or hurting your engine. If you believe it's helping, and not dangerous, throw it in your tank. Chances are that it is in fact a legitimate product, and will actually help your engine. I've noticed smoother starts and initial running at 5F with stanadyne compared to without...