RB25 Oil

[Kickit]

just wondering what oil is the best to use for my r33 skyline. im going to change the gearbox and diff oil and im abit unsure what oil to use, anyone got any idea's?
i run penrite fully synthetic 10 in the motor.

[reNEGade]

Depends what you want to do. If you have a million dollars and want to keep your R33 forever get Motul Chrono 300V 10W-40 oil. If you don't want to keep it forever, just put in Motul Turbolight 4100 10W-40. For gearbox oil I suggest redline lightweight shockproof oil (aka smurf blood). For diff oil a standard viscous LSD needs something like Motul Gear 300 oil, as it is not a mechanical LSD which needs friction additives.

[Kickit]

alright cheers ill look into it

[reNEGade]

Yeh, you can get most of this stuff pretty cheap on justjap.com.
I listed the best oils available.

[Petey]

Go all redline oil if u can afford it for diff box and engine. its not patroleum based and degrades about 100° higher then patroleum based oils. We use it in our race car nothing else would keep it as cool and lubed.. The previouse brand blow the old engine.. call them for more info

[mys1]

For a car with your level of mods, I would run the following (redline and motul are great oils, but not nescesary in your application.

Penrite Sin 10 for engine

VMX80 Castrol for Gearbox
LS90 Castrol Diff oil

Brand not so important, as long as its a name (Penrite, Castrol, Mobil etc)

Change it frequently (box and diff every 20-30k's)
Engine every 5k's

You wont have any dramas

[_oz]

i have been running penrite everyday fully synth 5w 50 in my gtr for the last 30,000kms and i have had 0 issues and perfect oil pressure.

Only just recently have i tried a slightly different oil, penrite sin 0 (0w50) - oil temps are always around 80-85, quite hard to get it above 95 which is good to see!

When i first bought my gtr i used mobil 1 5w50 and my oil pressure was shocking after 1,000kms >.< - dumped it and replaced with penrite, perfect.

[Kickit]

yeah ill stay with penrite. had it in every car iv had and never had a problem. might go redline for the diff and box.

[Socrates]

+1 for penrite

use it here too but the thick shit 20W-50 (60) +10 one.

[mys1]

yeah ill stay with penrite. had it in every car iv had and never had a problem. might go redline for the diff and box.

I wouldn't bother with redline mate,

It's
a) Expensive
B) Overkill for your application

[Kickit]

I wouldn't bother with redline mate,

It's
a) Expensive
B) Overkill for your application

what do you recon to run?

[mys1]

I perosnally run the Castrol, Never had an issue with it, most can attest im not terribly kind on my cars either.

regular changes will net you a better result than flashy oils :)

LS90 for the diff
VMX80 for the box

[mitcho]

I was using some shit castrol stuff (15-40) for the last year with no drama's.

Im in agreeance with mys1 though, regular oil changes are where its at. I change my oil before every event so about 12-15 times in the last year and the motor is still looking healthy as on the inside.