[Shotimes] changed oil, now engine ticks??

[Nathan Brown]

I've been using Mobil-1 5w-30 in my '93 for the past few years, and decided 
to switch back to conventional oil. Today I changed the oil and put in some 
Castrol GTX 10w-30, which was a recommended dino oil by a few people on the 
shoforum.

I was pleased to hear that the valvetrain seemed a bit quieter when I 
started it for the first time with the new oil. Once the engine got warmed 
up a few minutes later, though, I heard a constant ticking noise coming from 
the engine. At first I thought it was either the valves or the fuel 
injectors, it was that kind of noise, but a little louder than I've heard 
before. Upon further inspection, I noticed that the noise was lounder under 
the car than on top. It was also louder with the hood closed.

Could this be a sign of worn rod bearings? Any thoughts??

Thanks in advance,
Nathan

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