Engine oil OEM Subaru or Lucas

Either way I have the impression that the engine has a smoother sound and feel now, can this be possibile or it's just a placebo ?

They sell Subaru branded Idemitsu at the parts counter

Oil being dark is a good indicator that you have to do an oil change. However, you shouldn't wait until it changes color to do it. Clear oil doesn't necessarily mean you can keep going.

It is well established that boxer engines want their oil changed and I do not think for a second that a visual inspection is valid for determining if it is time. Highly, **highly** recommend you change the oil per the manual without hesitation and regardless of what it looks like.

I paid $67 for 4 qts of lucas full synthetic oil and a filter on Amazon and just grabbed an O ring from harley. Harley's oil is fucking garbage. Lucas, Amsoil, Motul & Mobil 1 full synthetic are all damn fine products.

I used lucas in my honda and will use it on my next change for harley

Personally I run Lucas oil in mine, not just my current zzr600, but even my older vintage bikes when I had them. It isn’t crazy expensive and is high quality.

I run Lucas 5w40, it’s more about doing oil changes more often rather than anything else. VW doesn’t have any special materials in the block or heads, it’s just cast iron and aluminum no different than any other.

id put 17 at the okay point but any lower is not good - well my subaru would do about 18-17psi at idle so im sure alls fine

I used the middle one on an old 200,000KM Porsche Cayman S that was burning oil. It made it worse, smoke started coming out of the engine when the oil cap was off and I felt like the engine would soon die.