- May 15, 2012
- The land of USA-made Subies!
Running an oil with sufficient levels of ester/alkylated naphthalene frequently is one of the few ways to really make sure your ring lands have the best shot at staying clean and free. Mobil used to have a couple oils that had both; I think they’ve reformulates away from that at least on some of their products. HPL is an easy way to ensure you’re getting the right amounts and not scouring PDSs on end with little to no avail.You are the only one to bring this up, so far. At 110,00 miles my car has just started to use some oil, maybe about 6 ounces per 6K OCI. I use mostly Pennzoil Platinum and recently Ultra Platinum when I can mail order for the same price as PP. I'm thinking about moving down to a 5K OCI because I can hear an engine noise level improvement after a 6K OCI .
Can I assume my ring lands are clean? Or should I/we consider using something like the HPL engine cleaner when consumption first starts? PCV has been changed with OEM.