Engine oil Mobil or AMSOIL

Mobil 1 is good oil and 5 quarts is like $23 before rebates.

I decided to make the switch to Amsoil Signature Series because I see people switch to it and report no oil loss.

I use the 0w40 Mobil 1 European Formula. It\u2019s great and it\u2019s cheap and you can find it literally anywhere. I get mine for $22 for 5qt from Walmart.

Mobil 5w-40 has absolutely been quieter for me than the Castrol equivalent.

I recently switched from Liqui Moly to Amsoil recently, my wife's Tiguan seems to run a little smoother and is noticeably quieter at idle with the 5-40 European car formula.

I'm at 80,300 miles, original owner and I just changed the oil, first time I tried Mobil 1 ESP 5w-30 502.00 504.00 507.00 and the old R is idling quieter than ever, previously I was getting some slight timing chain noise but now its gone.

Amsoil is just an above average full synthetic oil. It's nothing magical. It has a higher than normal "Total Base Number", which is what allows it to go longer between changes without going acidic.

Used mobil-1 on my 2015 corolla for 156k miles zero issues. Have used Mobil-1 0w-20 on my 2018 Camry for 65k miles and this point I have had no metal deposits for the whole duration.

I use Amsoil 0w40 or Eneos 0w50 in mine. For sealing and shear resistance for metal to metal contact, thicker is better.

I have a couple of oil changes of the M1 0W30 ESP. It does meet the spec.