Just about to do alittle service on my coupe. JUst tryin to work out what oil to buy?

10W-30 is good for just about any climate.

For the B310, Nissan release this chart and later started fitting it under the bonnet.

penrite HPR 30 OR 40

Good choice. I was thinking 20W-50 was "best" of those on the Nissan chart, but the Penrite HPR 30 is even better at 20W-60.

i agree with DD, the penrite was my choice too.... dont use mobil 1 for some reason the A series dont like it....

HPR30 all the way

just wandering wont hpr30 be too thick at operating temprature? especialy for small engines i use either 40 or 50 what ever is on sale!

what weight is better and why?

Thanks!

Can you even get Penrite in the U.S. DD? I use Castrol 20w-50.......

I have just re built an A15, mild cam and a bit of head porting, It is new and still tight, what do you guys suggest I use for oil. I am told Penrite is the go.. What Visco do you suggest ?
It is running at 180fh when driving but getting to 200-210 on fast idle sitting still.
Is this to hot ? I know a new motor is tight and runs hot but is this OK ?

Cheers,
LRS

now im using eneos 5-30w for my a15 mild race engine...so far so good... next oil change maybe i'll try 5-40w or 5-50w....
is this ok for my engine??

thanx.