Daily driver 99 TA with stock LS1 motor and has been solid as a rock. Car has been fully synthetic since 6k with 60k on Mobil 1 and the remainder on Royal Purple. A couple of weeks ago I noticed some lifter noise that quickly goes away at startup. Thought nothing of it with the cooler weather we have been having. However over the last couple of days it has become extremely worse (multiple cylinders). The majority of them quiet down almost immediately but one continues to tick for about a minute or so and then goes away. The gauge is registering good oil pressure right at startup as well.

Is a lifter replacement in order to prevent this? Has anyone successfully done this as I hate to pull the heads just to end up with the same results.

Thanks in advance

 

what weight oil are you running? if you are running the reccomended 5w30 weight, with as many miles as your car has on it, id say go with a 40, maybe a 0w40 or 10w40 mobil 1 or royal as u seem to prefer that, the thicker oil should remain in the lifters better. just a thought. hope this helps man.

-Ross

 

I actually went back to 15-50w Mobil1 thinking it may have been the Royal Purple and also by trying a heavier weight but it did not seem to help.