Which oil and how much of it?

[Pete]

Hi guys, had a couple of debates with people on this point recently.

I need some oil for the Barracuda for Saturday, having broken the motor in using 20/50 mineral oil (Cam did not need breaking in).

Also the sump is huge - it will take over 10 litres; and has a swinging pickup with single external AN 12AN Line.

I have been recommended Valvoline VR1 for the motor.

Would people go for straight mineral oil, or semi synthetic, or full synthethic?

Engine should red line at 7000rpm.


The Mains/Rod clearances are .0025".

It has a full grooved cam bearing to feed the rocker gear.

Also, given the sump capacity; how much would you actually put in it (there is no windage tray).

Any help would be appreciated.

Thanks,

Pete

[Blue]

I think I'd put 7.5 Quarts in it and keep a close eye on the oil pressure gauge for a few runs, 'cos you don't know how quick the oil will return to the pan. I'd use a good quality 15/40 mineral or semi synthetic, it's always worked for me.

[mopar_mark]

For what it's worth, I run Valvoline VR1

[Les Szabo]

VR1 does seem the popular Hemi race choice...20w50 Quaker State worked fine for me on a loose build and a warm engine, but things have moved on some since I was a lad...

I'd put as much in it as you dare, (8qts?) no tray/scraper?+swinging pick-up=min 10qt sumps, don't take long to empty the sump with a HV pump and heads that hold that much oil up there....

get the video out Pete


Les

[Jon Connolly]

Kendal gt1 all the way. ... Done 30 hard passes and it is like new ( used to use millers classic and it broke down due to heat )

If you need some pete i have approx 10 quarts. . You can have it and replace at a later date

[andyrob]

I put 10 lts in the coronet

VR1 is good stuff, never had a problem with it
VR1 20/50 mineral or
VR1 10/50 fully syn (that what I run coronet on)
In my Falcon I use 10/60 millers fully syn this is a real popular oil for circuit racing for both V8's & anything turbo charged: opie oil man recommended this to me for my S7R engine

[Mick70RR]

Amsoil 10w40 AMO in the Road Runner. It holds 7 1/2 litres up to the full mark but I run about 7 litres.

[Pete]

Thanks Guys, lots to think about there (and not a lot of time to make a purchase).

I can get Valvoline in the area, but still torn between mineral/semi synthetic. One place said they never stocked 20/50 as there was no demand....

Also on volume as I am concerned about emptying the pan and also over-filling and creating a "Red Arrows" pass.....

Keep the ideas coming, chaps

[Mick]

I use VR 1 mineral, with an additive because of the solid cam. just change it fairly regular.
Mick

[Steve]

Pete, I use the kendal stuff with zinc in it.... Ive been told our engines need zinc.... Is that just for old originals like mine or would tbat apply to yours aswell? I did know why they need it but Ive forgotten

Cheers Steve

[NaughtyAlan]

You got a dip stick Pete? , if so fill her up to the full mark. , wil be below the crank so no worrys.

[Les Szabo]

Pete some say big race sumps don't need a tray, some say deffo yes with a scraper as well....which way do you go?

I'm not a Hemi expert but I would stick a tray in there and feel better about filling it a bit more and have the crank protected rather than keeping the oil away with less quantity...

[mopar_mark]

I gotta tray too . . .

[MilesnMiles]

I get my Kendalls from Chris at WASP
Also use ZDDP additive for cam protection. Available on ebay and Burton Racing.

[NaughtyAlan]

Iv used Kendal GT1 for years, just torn down the 512, after (alot) of abuse, neat NOZ causing it lock up mid strip, chizel down intake and my right foot Im amazed to find it mint