ddiddle Posted August 12, 2011 Share Posted August 12, 2011 I realize that most of the engines we're talking about on this thread are somewhat high performance, but what about, say, a totally stock 1984 307 Olds engine? It's still flat tappet, right? So would using manufacturer spec oil/weight with a bottle of Lucas ZDDP or ZDDPlus keep me from cam failure? This is just on a sedan, not any kind of high performance thing. Quote Link to comment Share on other sites More sharing options...
680HPStroker Posted August 12, 2011 Share Posted August 12, 2011 Yes, but do a cost comparrison between conventional oil using the additive and a synthetic oil like Amsoil, or Royal Purple with their zinc package already in the oil and see which route is more economical. Quote Link to comment Share on other sites More sharing options...
72 LS5 Posted August 12, 2011 Share Posted August 12, 2011 Just did an oil change with Amsoil 10/40 (engineered for older vehicles with added zinc). Even though I have roller cam now, the zinc has to do some good elsewhere in the motor, why not use it? Quote Link to comment Share on other sites More sharing options...
Mo's70MCs Posted August 12, 2011 Share Posted August 12, 2011 From our friends at Valvoline.. Quote: Valvoline offers two solutions to the zinc issue Valvoline Racing VR1: 75% higher zinc than SM engine oil with a balanced additive package designed to work in both racing and street-legal applications. This product will protect older style push-rod and flat tappet engines. Valvoline provides this product in both multi and mono viscosity grades: SAE 20W-50 (part vv211), straight SAE 50 (part vv235), SAE 10W-30 (part vv205), SAE 30(part vv223), SAE 40 (part vv229), and SAE 60 (part vv241) Longer-Lasting Zinc/Phosphorus: Valvoline uses an advanced zinc/phosphorus additive that keeps higher levels of phosphorus in the engine oil where it protects the engine, instead of poisoning the catalytic converter. Valvoline is the only brand offering this unique additive across its entire line of passenger car engine oils, including SynPower which is the only synthetic offering this additive. www.valvoline.com Quote Link to comment Share on other sites More sharing options...
680HPStroker Posted August 13, 2011 Share Posted August 13, 2011 Valvoline doesn't have the corner on the market for zinc/phosphorus additive in their oils synthetic, or otherwise. Both Amsoil and Royal Purple have been doing it since day one. Quote Link to comment Share on other sites More sharing options...
James G. Posted August 19, 2011 Share Posted August 19, 2011 I run Valvoline ZR1 20W-50 in my 72 Monte, 454 engine, with no problems. It uses zero oil between oil changes and runs like a champ. Quote Link to comment Share on other sites More sharing options...
420ponies Posted August 19, 2011 Share Posted August 19, 2011 I started out with castrol 20-50, now I'm running Brad Penn 20-50 since last year at the Watkins Glen Vintage race.it has all the "good" stuff in it.It's the "Green" oil,yeah it is green in color.anything up there with a flat tappet design had a sticker on it.It's had the stuff in it since and I don't plan on switching.running a sbc with a little more than .510 lift with 292 duration.Always been a castrol fan but since they stopped with the zinc content I had to find something else to fill the void. Quote Link to comment Share on other sites More sharing options...
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