I have a 2006 GT with a Greddt TT kit. I have only put about 3k on the turbo kit and only have 7k on the car. I have only used Greddy GR2 (5w-40) oil which is now discontinued and no where to be found. I called Greddy and was told that Mobile 1 (5w-40) or Motul (5w-40) would be ok for the Greddy turbo's. I am so worried to use the wrong oil. I looked and Motul has like 3 or 4 different 5w-40 engine oils. I am not sure which to use. I would appreciate information from other members who have used a specific brand and weight for a long period of time. Please no dumb comments. I spend a lot of time and money in my car and only want the best. Sorry if others feel its stupid to ask such a question. Thanks, Robert

 

Mobile 1 0w-40 because that's what a GT-R uses...

Used to be 0w-40 when it was NA, but 15w-50 is what was suggested after the turbo install.

 

READ:

https://my350z.com/forum/engine-and-...-and-info.html

https://my350z.com/forum/forced-indu...il-for-fi.html

https://my350z.com/forum/forced-indu...you-using.html

https://my350z.com/forum/search.php

Educate yourself and choose whats best for your conditions/vehicle. Everyone's results/opinions will be different. I ran Royal Purple on a stock block/TT setup (track/drag/street) with no issues. Some hate it, some love it....

 

+1000

Resolute's thread will answer almost any oil questions that you have.

 

Thanks guys, I guess it all comes down to personal preference. So many use so many different things.

 

Yeah, theres a bunch of threads with the same topic, kinda of overwhelming information if your researching oil, gotta actually take your time going over everything and what the oils consist of and why, etc....

My favorite is Rotella T(non synthetic, they have a few weights, you pick), or Rotella T6 5w40(synthetic).

 

5w40 m1 turbo diesel. It performs better than everything else I've tried on my setup verified by Blackstone.

 

Last member who asked

What is the best motor oil?

was stuck by lightning and killed dead. That's a fact.

 

Mobil1 0-40 is fine for street use. If you track the car then I use motul 5w-40 in the summer months and change it frequently between events (call forged ask for tray they will ship it to you and answer your questions )

 

I'm curious... What else have you tried and had tested by Blackstone? Any experience with Rotella T6?

 

M1 0w-40 here

 

tried mobil...would lose a quart every 3000 miles

only run Torco 5w-30 or 40 now...6 quarts in..6 quarts out less a few ounces..car runs fantastic on it..529rwhp and 500 lb ft.

three 118 mile road races @ 5000rpm for the majority of the way and going to the 4th race this April..

 

Water

 

lol^^
motul chrono here...10w-40 summer driven and beaten ....

 

lol in all seriousness though i've been using conventional valvoline 10w-40 for a hard 35k on my built block with nothing but good results. frequent oil changes.

ross

 

Motul 8100 5W/40, then M1 TDT 5W40, then M1 5W/40 ESP, and back to M1 TDT after it beat the other two in terms of wear and TBN. Not a whole range of testing but I only on my 3rd oil change since going FI.

 

I use Rotella T6 synthetic, and have no complaints. Before that I used M1 0w40. Both are good IMO.

 

Mobile1 Syn 5w-30.

 

LMAO I like Mobil 1 0w-50

 

Not sure if this info was posted in one of the previous threads, but thought I would pass it on.

http://store.forcedperformance.net/m...otor%20Oil.pdf