Dear Guru,
I've suzuki alto 2010 model, it is being run fine in urban areas and no heat-up issue even with a/c on, but when I go on long drive the heat gauge is going up after just 10 to 15 km drive since 15 days. When I stay it becomes normal within half minute. A mechanic has asked that the problem in head gasket but i not agree because no bubble and no water loss in radiator nor pickup issue.
Please advise what could be problem.