Royal purple and flat tappet cams?
06-08-2007, 09:36 PM
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Car: 1986 firebird
Engine: 350
Transmission: THM350
Axle/Gears: 3.42
Royal purple and flat tappet cams?
I have a older 350 in my firebird, and it has a flat tappet cam, I need oil with more ZDDP additive then todays regular 10w-30 which has about 600 when I need 1000 or more. dont need my cam wiping, lol.
The valvoline Vr1 oil has 1200 PPM per quart which is what I need but I have to order it, Ive heard good stuff about royal purple and I can buy it around me
Anyone know the Zinc content in their 10w-30 grade?
The valvoline Vr1 oil has 1200 PPM per quart which is what I need but I have to order it, Ive heard good stuff about royal purple and I can buy it around me
Anyone know the Zinc content in their 10w-30 grade?
06-08-2007, 10:06 PM
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Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi
Re: Royal purple and flat tappet cams?
A buddy of mine just got done breaking in a motor with Shell Rotella T Diesel oil. Diesel oil has a higher amount of zinc in it and is good for breaking in cams. Royal purple is too expensive in my opinion to be used as a break in oil, seeing as you will be changing it out shortly anyhow.
06-08-2007, 10:10 PM
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Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
Re: Royal purple and flat tappet cams?
go with castrol HEAVY DUTY for break ins
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