[88Silver924S]

Years ago I had a Mazda with a noisy lifter and poured in some Gunk brand Valve Medic or something like that as a first try before a "surgical" solution. It worked that time, the lifter quieted down and never misbehaved again; no tear-down required. Something like that might be a first try. If it works, great, if not no harm done. If it was me I would change the oil between 400 to 800 miles to get clean oil back in the engine after some treatment like that . Good luck.