Join Date: Feb 2010
Location: Rome, Italy
Drives: 1999 Sportage A/T 4WD
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If it comes from the tappets I think it could be a lack in the lubrification. You should use a good oil, I think the best for my Sportage DOHC engine is 5-40W, change it every 10,000 Km or every six months, and replace the oil filter preferably with the original oil filter from KIA. But if you have used mineral oil it is better that you don't switch immediately to synthetic oil, but you should use half-synthetic oil (10-40W) before switching to synthetic oil (5-40W).
But before using half-systhetic or synthetic oil check if the engine of your car can use them, because I am referring to my '00 Sportage DOHC engine and I don't know what engine there is on your '96 Sportage.
Last edited by Galf; 08-14-2010 at 05:13 AM.