What Oil To Run In A Forged Engine

[WARLORD]

for a while now iv read and been told that a 10/40 grade of oil was the right stuff to use so today i changed from castrol edge 10/60 to royal purple 10/40 and to my shock i was told that its to thin for a forged engine so i felt like a num nut (again)

so how true is this?

and why?

thanks....

Edited October 16, 2008 by WARLORD

[2rismo]

Ask your engine builder.

[Guilt-Toy]

MOTUL 300v chrono is the only oil you should be running.

Unless you want to spin a bearing that is.

[WARLORD]

MOTUL 300v chrono is the only oil you should be running.

Unless you want to spin a bearing that is.

which is 10/40

right

[WARLORD]

Ask your engine builder.

he said 10/60

you never did tell me if those photos turned out.

Edited October 16, 2008 by WARLORD

[Strik3r]

Royal Purple is very good oil.. on par with the Motul. I run the RP10/40 in my forged engine no worries. As already said though, your engine builder should know what oil best suits your application.

[WARLORD]

Royal Purple is very good oil.. on par with the Motul. I run the RP10/40 in my forged engine no worries. As already said though, your engine builder should know what oil best suits your application.

yer but ...... !!!!!!!!! i think rp is much better than castrol and the only thing i got from him was watch the oil temp and it might burn oil ,that's it

Edited October 16, 2008 by WARLORD

[jas/slo32]

i now run 25/60 penrite bearings are in alot better condition once stripped down rather than a thinner oil i was previously using

but this car doesnt see street duties id say 10-60 would be better for more start / stop driving

[BezerkR32]

thats supposed to go in your gearbox. lol

all forged engines are different. it depends on your clearances. in the old days piston to bore clearance was 6thou. now a good quality forged piston like a CP for example can be clearanced as close as 2thou.

big end and main clearances are similar, some set them a little larger for high revving engines which is the reason a lot of skylines pick them up as they are to tight. the brand does not matter, as long as it is a quality oil. its the grade thats important. and the viscosity should be a 5w40, 10w40, 5w50, on a recently built engine. or similar. running an engine in is also important as some builders and camshaft manufacturers reccommend that it is done with a mineral oil only.

i run Repsol engine oils in all my engines, and plan on running 5w40 Comp in my Ls1 even though the piston to bore is a little excessive. if it uses oil it means its getting everywhere it is needed.

i now run 25/60 penrite bearings are in alot better condition once stripped down rather than a thinner oil i was previously using

but this car doesnt see street duties id say 10-60 would be better for more start / stop driving

[R31Nismoid]

he said 10/60

Well thats what you put in there then. He built it, he knows tolerances etc, he dictates the rules.

Forum can offer little

/thread

[BezerkR32]

i agree, if the builder has told you to run a 10w60, thats what you use.

Well thats what you put in there then. He built it, he knows tolerances etc, he dictates the rules.

Forum can offer little

/thread

[Guilt-Toy]

15w50

This oil is awesome. I have never spun shit when using it.

You will pay for it though.. just a little small extra insurance policy IMHO.

DO NOT RUN IN YOUR ENGINE ON THIS OIL.

It wont run in

which is 10/40

right

[Beer Baron]

MOTUL 300v chrono is the only oil you should be running.

agreed. I love it. true 100% synthetic ester. ie the real deal. I even run it in the lowly silvia.

edit: just one point 300V chrono is 10W40. the 15W50 you are talking about must be 300V 'competition' or someting. all the 300Vs are the same quality of oil, just different viscosity.

[WARLORD]

my engine has done 15k on 10/60 so ill give it a go the engine sounds quieter now with 10/40.. i change oil every 4k so ill see .

thanks for the input guys nice to see friendlier comments this time .

[WARLORD]

Well thats what you put in there then. He built it, he knows tolerances etc, he dictates the rules.

Forum can offer little

/thread

the forum has offed some good info,that' s what its all about right.

[2rismo]

he said 10/60

you never did tell me if those photos turned out.

Use 10/60 then. What photos?

[WARLORD]

Use 10/60 then. What photos?

from supernats 07

[BezerkR32]

what he is saying that sometimes people give opinions on topics they have no idea about, and have no liabillity at the end of the day if they give you a bum steer.

the forum has offed some good info,that' s what its all about right.

[Swiper the Fox]

what he is saying that sometimes people give opinions on topics they have no idea about, and have no liabillity at the end of the day if they give you a bum steer.

Croydon used to insist i run 20/60 Motul 300V Le Mans...probably cause they stocked it and it cost me $300 to do an oil change with it.

[WARLORD]

Croydon used to insist i run 20/60 Motul 300V Le Mans...probably cause they stocked it and it cost me $300 to do an oil change with it.

that's cheap............not

what do you use dirtgarage

o and by the way does anyone have a job these days so many people on this morning.

Edited October 17, 2008 by WARLORD