Originally Posted By: awoess
Nissan does recommend ester oil.. And redline 5w-30 advertises as ester oil which is cheaper than Nissan ester oil... Is there any other brands that offer ester oil?
What does the oil section in your manual ask for? What grade and what API/ILSAC specification? I'm assuming it's asking for 5w-30 in resource conserving, but is it SJ, SL, or SM? Is it under warranty?
The darn Red Line site is down right now, so I cannot check what API specifications Red Line holds. I'm confident it doesn't hold SM or SN certifications. I'm virtually certain it won't hold ILSAC GF-4 or GF-5 resource conserving certifications. If under warranty, that is an issue.
Do note, however, that Nissan doesn't recommend actual ester oil. Nissan recommends
their ester oil, and for two reasons. First, they charge astronomical prices for it, and people are apparently willing to pay them. Secondly, it was designed to treat one specific issue, and that was a ticking sound at about 2,000 rpms in some of the VQ type engines. Not all engines have that issue; mine does not. Nissan/Infiniti has stated that it's merely a cosmetic issue, and has nothing to do with premature wear or actual engine problems. Nissan doesn't recommend actual ester oil, since there really aren't any that have the latest API and ILSAC certifications; if you want to be picky, they essential prohibit them.
If you're set on a primarily ester based oil, you have a couple problems. The Nissan ester oil isn't ester based, not by a long shot. Secondly, if you're under warranty, you're simply not going to readily find an ester based oil with SM/GF-4 or SN/GF-5 certification.
If you're not under warranty or don't care or simply can use older specifications, there is Red Line, old style API SL rated Royal Purple (with a sulphurised ester), and Royal Purple HPS (non-API certified) which spring to mind. Also, check
here for ExxonMobil's views on the issue.