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PostPosted: Fri Nov 09, 2018 2:32 pm 
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Posts: 55
Hey coupe3w,

Thanks for that but unfortunately I'm not Stateside, I'm in New Zealand.
While I've never purchased the vr1 10w/30 before I'm sure I've seen it on the shelves but not anymore, it appears the 10w/40 may have replaced it as the 10w/30 isn't even mentioned on the Valvoline NZ website.
I'll ask the shop to check into it for me though but may have to try the 10w/40 version and see how it goes.


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PostPosted: Sat Nov 10, 2018 8:12 am 
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You have to watch about the 40 weight oils. Some of them are too thick to work with the Morel lifters. You want something with a kinematic viscosity of 14.5 cSt or less at 100°C.

I do know the Valvoline 10W-30 VR1 non-synthetic oil works very well with these lifters. I have not tried their 10W-40 oil.

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PostPosted: Sat Nov 10, 2018 1:16 pm 
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Thanks for that info Brent, I'll do some homework...


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PostPosted: Mon Nov 26, 2018 3:20 pm 
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So, done some homework.....

Valvoline vr1 10w-30 non syn is not big here in NZ and hard to get, I can get some in from the US but think I'd prefer a readily available option.
The vr1 10w-40 semi syn that is available here has a kinematic viscosity of 15.13 @100C so no good.

Penrite in Aussie have a big range here and an excellent website for checking all the specs, unlike some others.....
I've come up with some options:

Premium mineral 15w-40
Zinc mass %0.108
Phos mass %0.098
Kinematic vis @100C 13.8
Sulph ash %0.83
TBN 7.6

Semi syn 10w-40
Kinematic vis @100C 13.5
Zinc 0.122
Phos 0.111
Sulph 1.10
TBN 11.0

Semi syn 10w-30
Kinematic vis 11.3
Zinc 0.085
Phos 0.077
Sulph 0.78
TBN 7.0

I see the recommendations for Morel hyd roller lifters is a 10w-40 Driven brand, full syn and mineral oil.

I'm leaning towards the the 10w-40 semi syn with reasonable zinc levels and see how that goes.....

They also have a 15w-40 high zinc break in oil with kinematic vis of 14.8 which will hopefully be ok for initial fire up.

Engine should be done in a week or so my builder tells me, so then straight to the dyno shop, let the fun begin :D


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PostPosted: Mon Nov 26, 2018 6:38 pm 
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Posts: 537
Location: Orange County, NC
I was always under the impression zinc was important for flat tappet stuff and not near as important for roller lifters since they actually roll across the lobe and instead of slide across it.
I havent paid attention to zinc levels for any of my roller stuff ever. I do pay attention to it for the solid flat tappet motor in the street car though.


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PostPosted: Mon Nov 26, 2018 7:33 pm 
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Yep that was how I understood it as well but the chief tech guy said the the break in oil will help seat the rings as well, even tho it's a roller engine. I'm sure I read somewhere here that a reasonable amount of zinc is still useful in roller engines to help protect the cam/dist gears...

Not sure yet on the semi syn vs the mineral for normal running, will just see what the engine likes I guess....


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