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#1 |
Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,321
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Zinc oil additive
How many of you guys run zinc oil additive in your motors? I have a 79 350 and getting ready to change the oil after the break in
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Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart ![]() My build 2008-2016. http://m.imgur.com/a/bURrE |
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#2 |
Old Heap Driver
Join Date: Mar 2008
Location: Newport News, Va
Posts: 2,640
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Re: Zinc oil additive
I do, ZDDP
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_____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver. |
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#3 |
Registered User
Join Date: Jan 2001
Location: Lincoln, Nebraska
Posts: 2,145
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Re: Zinc oil additive
I am breaking in my rebuilt 327 with Amsoil full zinc breakin oil and then after 100 miles I will run Amsoil Z Rod oil as I do in all my older non roller cam engines.
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'66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed" |
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#4 |
Registered User
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,227
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Re: Zinc oil additive
I used Comp Cams break-in oil at the start, and then I've been running Lucas Hot Rod oil (high Zinc) ever since (3 years now, daily driven).
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1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate |
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#5 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Re: Zinc oil additive
I heard of guys using Rotella 15W-40 as it is unregulated like the 10W-30 ones, its a Diesel motor oil but don't mind that, by the way asking what oil to run can start WWWIII just sayin', it's right up there with what spark plugs to use, or what tires to run, ha ha
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#6 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: Zinc oil additive
The new LE rotella hasn't the zinc any more either. But keeps an engine super clean inside, my 406 looked awesome when it was apart last. Had been together since 2007 with rotella 15w40 in it.
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" That didnt make it any newer " " Dont antique the equipment " |
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#7 |
Registered User
Join Date: Sep 2007
Location: N.E. Florida
Posts: 500
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Re: Zinc oil additive
I use AC Delco EOS. I have used it when breaking in my Harley engines for the last 20 years. I have it in my new 350 crate engine. You can buy it at Pep Boys also.
Ken
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1985 IROC Z28 190HP TPI 305,700r4,T-tops,rear trac lock, Black on lite gray, 16in Z28 wheels 2007 Lexus ES350 (wifes) 1984 CJ7 with 1995 HO4.0L MPI, 2 1/2 OME YJ Lift “There is no limit to the amount of good you can do if you don't care who gets the credit.” ― Ronald Reagan |
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#8 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Re: Zinc oil additive
thanks for the tip Ken, I wish we could still buy this in our local parts houses here in California but at least in Nor Cal no go, Lucas is the only additive we see, and it's pricey. Is it Lucas domination or CA regulations? who knows, either way we suffer
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#9 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Re: Zinc oil additive
I think the T still does
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#10 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: Zinc oil additive
Not the cj4 spec, as the new diesel trucks get all the emissions crap.
Like catalyst and soot traps and egr the oil has gone the same way. Diesel oil is probaby better, but not as good as it was. I like it for the 2.5 gallon jugs at wal mart
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" That didnt make it any newer " " Dont antique the equipment " |
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#11 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,484
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Re: Zinc oil additive
Why mess with additives or the latest formulation (reduced ZDDP) Rotella T when you can spend a little more for oil with the correct levels of zinc and phosphate DESIGNED IN to the additive package, not added on? Depending on what your oil has in its additive package, pouring in a bottle of ZDDP Plus could cause the zinc and phosphate levels to be too high, causing more harm than good. You can google "ZDDP levels" and read for hours on end.
I like Driven Racing Oils, formerly Joe Gibbs Driven. http://www.drivenracingoil.com/ Their products are not cheap, but neither are Lucas products, a company that was started after the owner supposedly found a 55 gallon drum of some magic elixir in a building he bought. Sure, I'm buying that story. If your engine has stock or mildly upgraded valve springs, and you used a good break-in oil, you'll be OK with Valvoline Racing Oil in the silver jar. Or Mobil 1 10w30. In fact, the 350 in my son's 69 Chevy pickup has a mild flat tappet Edelbrock cam with matching valve springs that have 80# seat pressure. After break-in in 2004 with regular oil and CompCams P/N 59 break-in lube, we have been running a variety of name brand 10w30 oils, and the engine has been running strong since then. That's probably because the vast majority of cam/liter wear happens during break-in. After that you're good to go, at least with mild cam and valve springs. BTW, google "Lucas Oil" followed by the words "scam", "stabilizer, "truth", etc. My favorite Lucas product is their Stabilizer which is 80wt oil and soap, which is actually listed in the MSDS data sheet! I wouldn't trust this company's products to lubricate even a bicycle chain. From Business News Daily: Lucas attempted to make better oils that would help prevent his trucks from breaking down while also maximizing their performance for his fleet. To accomplish this, Lucas began searching in chemical junkyards for the right ingredients to mix and match to create his products. Those searches, combined with his existing mechanical knowledge, led to the first official Lucas Oil Products, and a test of these products on his own trucks proved the formula worked. "I never went to college, but there are times when you are taught something and you are told this is the way it is and you believe it enough that you close your mind to any other thoughts," said Lucas. "Eventually I learned the way you were supposed to do it, but by then I already knew I was way ahead of everyone else."
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! Last edited by MikeB; 07-18-2016 at 12:17 PM. |
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#12 |
Senior Member
![]() Join Date: Apr 2012
Location: Otway OH
Posts: 788
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Re: Zinc oil additive
I admire any man who has the stomach to walk into a Walmart.
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#13 |
Registered User
Join Date: May 2009
Location: Good Thunder Mn.
Posts: 955
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Re: Zinc oil additive
I broke my 400 in rotella, with Lucas break in additive, then switched to mobil conventional 10w40 with edelbrock zinc additive.
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#14 | |
Registered User
Join Date: Sep 2014
Location: Manley Hot Springs Alaska
Posts: 253
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Re: Zinc oil additive
Quote:
I think this is the best, might not be the cheapest, don't care about that. Good price online and free shipping az |
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#15 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: Zinc oil additive
Ha walk in the back door to the auto section and get my 2.5 gallons and gtfo
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" That didnt make it any newer " " Dont antique the equipment " |
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#16 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: Zinc oil additive
And for the record, I went roller cam 10 years ago. It's on its 3 rd rebuild, same cam.
Get the rotella for the 2.5g jugs. 9 quart pan and a tall filter, don't even pull the dipstick
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" That didnt make it any newer " " Dont antique the equipment " |
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#17 |
Registered User
Join Date: Jun 2007
Location: metropolis il
Posts: 91
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Re: Zinc oil additive
another rotella 15/40 user here. I've only been running it the past couple years, but no complaints.
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#18 |
Registered User
Join Date: Nov 2011
Location: Sheffield, ALA
Posts: 2,471
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Re: Zinc oil additive
The engine in my 86 came from Auto Zone about 7 years ago. Needless to say it doesnt have but about 18,000 on it now. Long story but it's true. I've put the lat 8000 on it. Stock engine. Would it hurt to run the delo oil in it?
Or Castroil 10w30 or 40 and keep on running it. It's not using any at 3000 oil change. |
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#19 |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
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Re: Zinc oil additive
For a while I was very anal about keeping extra ZDDP in my '85's 454, but I've slacked off based on reading and more observation. My dad's '86 K20 (350) has 361,000 miles on the original cam (two valve jobs over the years - that engine's been used for a lot of pulling) and never had a drop of anything except conventional oil (10w30, 10w40, and maybe some 20w50) put in it. My 454 has 122,000 on it - I've had it since 77K and have used Schaeffer's syn blend for most of that time. For a stock engine that's maintained well, my opinion is the only time a ZDDP additive or high-zinc oil is necessary is during break-in. And don't fall for the "synthetics leak" nay-sayers - Valvoline Maxlife is good stuff that a lot of people trust.
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Alex V. ------ 1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs. 1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue. |
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#20 |
Registered User
Join Date: Nov 2011
Location: Sheffield, ALA
Posts: 2,471
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Re: Zinc oil additive
Been wondering if I need to run any. But i didnt think it needed it because of the years on it.
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#21 |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
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Re: Zinc oil additive
Paws72, as long as it has a fairly calm cam I'd use Valvoline MaxLife 10w30/40 with no additives and have no worries. I run it in my Suburban's flat-tappet, carbureted 350 ("broomstick" truck cam - only put about 10K on it so far), it's the oil my dad used in his '97 Suburban from 170K to-date (415K and counting) and I've seen it cut consumption roughly in half in a Dodge and Buick 3.8L V6, both with just under 200K at the time.
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Alex V. ------ 1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs. 1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue. |
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#22 |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
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Re: Zinc oil additive
At this point it is prudent to mention that more is not better. Too much ZDDP can turn
the oil corrosive & cause more harm than good.
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1969 c-10 Step Side Long Bed. I-6 250cid = ![]() |
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#23 |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
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Re: Zinc oil additive
Ditto on that, too.
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Alex V. ------ 1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs. 1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue. |
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