[frosty]

Just as I thought - 5W - 50 synthetic going to protect engine best.

http://www.synlube.com/sae5w-20.htm

GOOD READ!

I've got 2 Commodores both OVER 500,000k and not a whif of smoke or oil usage.

FRIZZLE

 

[Z350Lover]

Frosty:

According to nissan... the viscosity at 7.5W will be the best, but that's not available in the market... therefore, the best alternative will be 10w range.

I read on the hypertech magazine on the 350z.... it says that we shall avoid using 0w range product as it is not good for the VTC that we are running... I am not too sure why exactly it isn't good though... but they do recommand 5w and 10w range...

That's also why I swapped out my 0w-40 straight away after reading that... but with turbo cars, I think 0w-40 is the best option though...

cheers,

richie

 

[Ztrack]

Richie I thought a 10W-50 or 10W-60 would be better suited to the higher temps of a turboed car which has oil running through the turbo's,
I'm trying the 5W-60 Penrite Syn5 oil at the moment.

Cheers

 

[Nuff]

Just wanted to chime in that the oils with wide viscosity range have a lot of additives to do so. One of the side effects will be that the oil will degrade a lot faster and it'll not be as stable.

Myself I just got Mobil 1 10w-30 and I'm going to mix it with my left over Motul 300V 5w-30. I've been very unhappy with Mobil 1 5w-50, the car ran like crap. Noisy, terrible cold starts etc.

There's a lot more to oils then the viscosity numbers. The best place to get more information about oils is http://www.bobistheoilguy.com, there's more to oils then marketing and there are numbers behind it. There's a very informative forum on that website. Here's an introduction which explains that there's more then just viscosity. http://www.bobistheoilguy.com/basic_lubrication_design.htm

 

[frosty]

Just reading up on aviation oils, and came across this.

BTW - aviation does not use synthetics.


http://www.stealth316.com/2-breakin.htm

FRIZZLE


For the aviators:
http://www.swaviator.com/html/issueja02/Hangar7802.html

 

[frosty]

More on engine break-in (re oil usage and GLAZING).

FRIZALLEY

http://www.ducati.net/faq.cfm?id=51