if you have the 3.2 v6, consider running gunk engine cleaner in it each oil change and then mobil one full synthetic (i use 0w-40). these motors are prone to "ticking" which happens when the valve lash adjusters get gummed up with varnish. M1 keeps it to a minimum.

97Rodeo Rancho9ks/Aisins/3.2L SOHC/M1 only
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Proper Prior Planning Prevents P*ss-Poor Performance--Maj. R.T.Spooner USMC(Ret.)