Nissan 370Z Forum - View Single Post

Gee · 11-25-2009, 07:24 AM

Yeah, this is one of those very controversial subjects, as an old tv commercial once said "oils ain't oils, sol"

Last change I used a Penrite "fully synthetic" 5w-50. What constitues the definition of "fully synthetic" is not even fixed and one manufacturers' can be a lot different than anothers. There are different processes for creating synthetic oils based on different chemical approaches and the legal definition of "synthetic" has changed over the years (in relation to oils I mean) .I've read a numerous articles on this. I'll not go into details at the moment, but in summer I go up from 5w-30 to 5w-50, last Sunday (41 degrees+ in sydney) being the reason why.

check out the wikipedia entires for oil.

If you are uncertain and don't mind paying the premium go with Nissan's own until you can make an informed decision. From what I can discern from the literature they push one of the better formulations on the market.

Engines just looove fresh oil. Just be sure to change the filter when you change the oil.

Be careful of magnetic drain plugs and more so the magnetic devices you attach to the filters themselves. If they ever fall off / get disrupted you will get a huge surge of all the metal particles they have gathered being dumped in one surge....ouch! I've never used them myself but many ppl swear by them.

The oils job is to hold all that crap in suspension , hence the pitch black look after a few hundred k's , and lubricate the metal parts. Saw a post once where someone was complaining that they suspected they had a engine problem and wanted to do a rebuild becausue the oil went pitch black after a few hundred miles. Dude, chill. pitch black = the oil doing its job, especially in an older engine.

Anyway thats my $2 worth

G

11-25-2009, 07:24 AM	#4 (permalink)
Gee Base Member Join Date: Nov 2009 Location: Central Coast NSW Aust. Posts: 71 Drives: 09 370Z MB M6 Rep Power: 15	Yeah, this is one of those very controversial subjects, as an old tv commercial once said "oils ain't oils, sol" Last change I used a Penrite "fully synthetic" 5w-50. What constitues the definition of "fully synthetic" is not even fixed and one manufacturers' can be a lot different than anothers. There are different processes for creating synthetic oils based on different chemical approaches and the legal definition of "synthetic" has changed over the years (in relation to oils I mean) .I've read a numerous articles on this. I'll not go into details at the moment, but in summer I go up from 5w-30 to 5w-50, last Sunday (41 degrees+ in sydney) being the reason why. check out the wikipedia entires for oil. If you are uncertain and don't mind paying the premium go with Nissan's own until you can make an informed decision. From what I can discern from the literature they push one of the better formulations on the market. Engines just looove fresh oil. Just be sure to change the filter when you change the oil. Be careful of magnetic drain plugs and more so the magnetic devices you attach to the filters themselves. If they ever fall off / get disrupted you will get a huge surge of all the metal particles they have gathered being dumped in one surge....ouch! I've never used them myself but many ppl swear by them. The oils job is to hold all that crap in suspension , hence the pitch black look after a few hundred k's , and lubricate the metal parts. Saw a post once where someone was complaining that they suspected they had a engine problem and wanted to do a rebuild becausue the oil went pitch black after a few hundred miles. Dude, chill. pitch black = the oil doing its job, especially in an older engine. Anyway thats my $2 worth G __________________ "...'cause the only decent things that come in 2 litres are milk & orange juice"