Honda parts reviews

Rotella T6 5w-40

But if you want the short of it:

ANY high mileage full synthetic 5w-30 oil will do great. Mobil 1? Sure. Amazon Basics? Hell yeah. Wal-Mart's Supertech? Send it.

I dropped some 0W-30 Mobil 1 this winter, and my sol with a d15b7 loved it. Made cold starts very smooth, and noticed no reasons not to continue running it.

I've used only 5w30 full synthetic (usually Mobil 1, sometimes others) since I bought mine 15 years ago (D15B7). Using the high-mileage variety nowadays, supposed to help out the old seals etc. Just over 150k miles but engine runs very smooth so seems to be doing the trick.

Castrol Edge European formula 5W-30. Closest thing to group IV you can easily find in the states.

I run Mannol 5w30 for Japanese brands on my 202k km d16

Works fine but I might change to a slightly thicker one

I use Mobil 1 synthetic blend HIGH MILAGE 5w-30. I think the high milage formula is the best for these old engines.

Replaced the starter with a brand new one (Good)

You turn the key and hear the clicks but the starter does nothing!

In March of this year I replaced my battery for 98 Civic Ex with an autozone Ac Delco one. With the colder days I started to notice slower cranks if the car had been sitting a day or longer.

Changing the oil filter on 8th gen Si's is a pain in the ass. You need to stick your entire arm around the exhaust header, axle, and steering rack to get to the filter, and then once you barely get a grip and spin it off, it spews oil all over your axle boot and into the subframe.