Time to switch oil?

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Time to switch oil?

Postby Eck » Tue Sep 19, 2017 6:48 pm

So when I got my engine rebuilt, the engine builder recommended VR1 10w-50 Racing Oil because of the zinc content. I have since changed the cam from a flat tappet to a roller cam with a roller lifter kit.

So should I change to standard motor oil now? I've got about 5000 miles on the engine since the rebuild. What should I be using? For what it's worth, I've been using the Baldwin filters.
69 Wagon, 351W, Explorer EFI & Serpentine, ZF5, 35" tires, 3.5 SL, 2 BL, WARN 8274
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Re: Time to switch oil?

Postby Jesus_man » Wed Sep 20, 2017 7:43 am

I'd stick with an oil with a high zinc content. It can't hurt. My machine shop recommended Rotella T after I have used up all my racing oil.

The alternative is to use an additive. BG MOA for instance.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
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Re: Time to switch oil?

Postby ZOSO » Wed Sep 20, 2017 8:35 am

Rotella changed their formula and cut back on the zinc a lot. I used to run just regular Valvoline. Now I run Amsoil ZRod oil. Flat tappet or not high zinc is good to have.
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74 Ranger EFI351w, 4r70w, ARB 5.13 9in, ARB 5.13D44, and a bunch of other goodies. Best of all the family memories.

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Re: Time to switch oil?

Postby Digger » Wed Sep 20, 2017 10:30 pm

Right or wrong I'm running plain ole Valvoline 5W-30 with a 1994 block and roller cam.
Cummins R2.8 diesel, ZF5, AtlasII, HP44/BB9, ARBs, coiled / linked suspension, 37" KO2s, full cage, bumpers, etc.
Build Thread: http://www.coloradoclassicbroncos.com/viewtopic.php?f=3&t=5420

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Re: Time to switch oil?

Postby 347bronco » Fri Sep 22, 2017 4:33 pm

I run 10w -40 Lucas Hot Rod and classic oil. High zinc content only reason not to use high zinc oil is if you have a catalictic convertor. Shell has changed formula on Rotella less zinc .
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Re: Time to switch oil?

Postby Viperwolf1 » Fri Sep 22, 2017 7:03 pm

Digger wrote:Right or wrong I'm running plain ole Valvoline 5W-30 with a 1994 block and roller cam.
Same here.
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Re: Time to switch oil?

Postby Jesus_man » Mon Nov 06, 2017 9:20 am

Viperwolf1 wrote:
Digger wrote:Right or wrong I'm running plain ole Valvoline 5W-30 with a 1994 block and roller cam.
Same here.

I assume "Plain ole" means conventional? Not Full Syn. or Max Life? It's oil change time again for me.
1973 Bronco, 351 SEFI, Locked, discs, 35's ZF-5spd and Atlas 4spd. 235:1 Crawl Ratio. It may be ugly, but it's slow.
http://www.ucora.org
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