Options on High Zinc Oil for Cobra Kit Car

[Inked]

Guy I work with has a 2007 Cobra kit car with a 351 Windsor bored and stroked to a 393. Car has 3700 miles with 475 HP and 525 TQ at the crank and he has no plans on tracking the car. Sunday driver that sees occasional spirited driving but not for long periods. Builder claims he can (not he must) use 20W-50 but the more important thing, per the builder, is that he uses a high zinc content oil. His current fill is Valvoline VR1 Syn in 20W-50 but is looking for other options cost wise. Says he is spending about $10.00 a qt. Maybe a thicker 10W-40? Thanks in advance.

 

[vintageant]

Shell Rotella diesel oils: 5W40, 10W30, 15W40 all have a zinc count in the 1100-1200 range.

 

[901Memphis]

Mobil 1 0W40 European Formula at Walmart for about 25$ per jug.

 

[mrsilv04]

All that money invested, but he can't afford to pay $10/quart of oil, that he's probably only changing once a year?

 

[901Memphis]

Brad Penn makes high ZDDP oils in something that fits, 10w40,15w40,20w50 or higher.

http://www.penngrade1.com/Products/Racing-Oils.aspx

 

[bigt61]

M1 15W-50 or 0W-40 would be fine. QS Defy 10W-30 is another cheap option.

 

[209paulc]

Frankly a good Dino (10w40) with a zinc additive (edelbrock) would do. My personal vote would be Castrol/M1 0w40, RT6 or Delo Syn 5w40.

 

[ARCOgraphite]

Is this Q asked 2x a day NOW? You should post in the racing forum - a built 351W is not necessarily a low/mid saps PCMO candidate.
Everone ignores my suggestion to use a 4T motorbike or ATV oil. Why? High ZDDP and its rated typically the API (obsolete) SH/SJ. It will be low moly though. I know, you cant put oil in a car that has a picture of a motorcycle on the bottle

Too bad.

Any ACEA A3 B4 /SL in a grade 30 or 40 should do depending on how loose the motor was built.

example: Valvoline ATV motor oil:
Approvals/Performance Levels
Meets or exceeds API SJ/SG/SF
Meets JASO MA specifications
Meets or exceeds manufacturer’s warranty requirements. Will not void warranties.
Test
Typical Property
Vis @ 1000C(cSt)
15.0
Vis.@ 400C(cSt)
105.6
Viscosity Index
150
Specific Gravity @ 600F
0.8737
Density (lbs/gal)
7.28
Total Base Number
7
Flash Point, COC, 0F/0C
420/216
Pour Point (0C) max.
-33
CCS, cP (0C)
6200(-250C)
MRV TP-1 cP (0C)
25000
Sulfated Ash, wt.%
0.8
Zinc/Phosphorus, wt.%
0.102/0.093
Calcium/Sodium, wt%
0.162/0.047
Part Numbers
Quart
VV749
This information only applies to products manufactured in the following location(s):
Effective Date:
Replaces:
Author's Initials:
Pages
Rev. Code
2-20-09
5-23-06
DJD
1
002

 

[ARCOgraphite]

The Valvoline VR-1 Racing Motor Oil
• The #1 selling Racing Oil of all time and race track proven.
• Protects against high-temperature deposits for a cleaner engine.
• ZDDP additive provides tough anti-wear protection.
• Enhanced with fricition modifier to improve horsepower.
• Formulated with enhanced anti-foam system.
Approvals/Performance Levels
Viscosity Grade/Other
API SN/SM/SL
- - - - - - 20W-50
API SH *
10W-30 20W-50
API CD/CF *
10W-30 20W-50
Test
10W-30
20W-50
Vis @ 100°C (cSt)
11.5
20.5
Vis @ 40°C (cSt)
77.0
181.8
Viscosity Index
143
132
Spec Gravity @ 60°F
0.8722
0.888
Density (lbs/gal)
7.27
7.39
Total Base No.
8.5
8.5
Flash COC (°C)
212
248
Pour Point (°C)
-33
-24
CCS cP (°C)
6200(-25C)
8000(-15C)
MRV TP-1 cP (°C)
20,000(-30C)
27,000(-20C)
Noack % off @ 250C
Sulfated Ash
1
1
Zinc/Phosphorus
0.14/0.13
0.14/0.13
Calcium
0.210
0.210
Sodium
0.049
0.049
.
* Obsolete category
This information only applies to products manufactured in the following location(s): USA, Canada
Effective Date:
Replaces:
Author's Initials:
Pages
Rev. Code
6-8-11
12-6-10
DJD
1

 

[aquariuscsm]

Pennzoil Racing 25W50 has a ton of zinc. Cheap,too. Same price as their other conventional oils.

 

[Inked]

Thanks to everyone for the responses. I'll pass them on.

 

[Ben Boyle]

Per my UOA, Wolf's Head Extreme Duty 15-40
www.benboyle.com/uoa.pdf

 

[Garak]

Originally Posted By: ARCOgraphite
Everone ignores my suggestion to use a 4T motorbike or ATV oil. Why? High ZDDP and its rated typically the API (obsolete) SH/SJ. It will be low moly though. I know, you cant put oil in a car that has a picture of a motorcycle on the bottle

Too bad.

I wonder how those would work as breakin lubes, too.

 

[OVERKILL]

Is the engine roller or flat tappet?

 

[Inked]

Tappet

 

[artificialist]

Amsoil Z-Rod and JGR Driven oils have high zinc, and they also have a higher concentration of additives that fight corrosion while the car is in storage.

 

[OVERKILL]

Originally Posted By: Inked
Tappet


Any details on the camshaft?