Hey folks,

I've been doing some general maintenance on my car over the last few months (got a Billman TCT, changed the fluids, tightened the subframe bolts). Just a couple days ago I also did a valve adjustment & replaced my diff fluid.

For my valve adjustment, all my exhaust clearances were tight and all my intake clearances were loose. It seem noisier now though. I'm wondering if I should go in and check again. Here's a vid:
My car has 86k on it. Previous owner gave me a receipt for a diff oil change at 73k

thanks!

 

Tight valves are quieter as there's less slop between the lifter and valve. Mechanical lifters are noisy to start with.

What differential oil did the previous owner use?

-- Chuck

 

Thanks!

not sure what he used. I used 75w90 Mobil 1.

Here are some pics of what I found on the drain bolt

 

Looks normal to me. But I've only changed my differential oil twice.

-- Chuck

 

Yup that looks normal, I just did my diff fluid on my new to me s2000 , mine looked exactly like that. I used amsoil severe gear 75w-110w , good luck buddy

 

Drain bolt magnet looks normal.

Drain the Mobil1 75w90 in 35k miles, you'll see what a super clean magnet looks like.

 

Its normal for the engine to be a little noisier after valve adjustment, especially if you had some tight valves.