Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
05-26-2016, 05:42 PM | #1 |
Registered User
Join Date: May 2016
Location: Summit, MS.
Posts: 188
|
What Type of Oil To Use
I have a 1970 Chevy C-10 LWB Step Side Pick Up. It has a 250 straight six. What type and grade of motor oil should I put in it? Also any idea of how many quarts it holds with filter? Any help would be appreciated.
|
05-26-2016, 06:16 PM | #2 |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
|
Re: What Type of Oil To Use
If it's a healthy engine with decent oil pressure (at least 10-15 pounds at idle, 35-40 in the highway) I'd run 10w40 synthetic blend. If oil pressure is lower or it gets used hard much, bump up to 15w40. I really like Valvoline MaxLife and prefer Wix filters. I believe it'll hold 5 qts. with filter.
__________________
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. |
05-26-2016, 07:07 PM | #3 |
Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,329
|
Re: What Type of Oil To Use
Mobile 1 5W30 Full Synthetic
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
05-26-2016, 08:17 PM | #4 |
Registered User
Join Date: Apr 2009
Location: houston texas
Posts: 1,438
|
Re: What Type of Oil To Use
If it is older engine it is not a good idea to switch over to synthetic.
|
05-26-2016, 09:00 PM | #5 |
Registered User
Join Date: May 2016
Location: Summit, MS.
Posts: 188
|
Re: What Type of Oil To Use
Yes it is the original engine. 122,000 miles on the engine.
|
05-26-2016, 09:25 PM | #6 |
Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,529
|
Re: What Type of Oil To Use
|
05-26-2016, 09:42 PM | #7 |
Senior Member
Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
|
Re: What Type of Oil To Use
Castrol 20-50 classic xl made for these engines and has never given me any problems
__________________
1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
05-26-2016, 11:08 PM | #8 |
Registered User
Join Date: Apr 2009
Location: houston texas
Posts: 1,438
|
Re: What Type of Oil To Use
I know of one guy who switched over to synthetic in a well used motor it began to leak at several gaskets. he had to pull the motor and install new gaskets.
|
05-26-2016, 11:53 PM | #9 |
Registered User
Join Date: Mar 2016
Location: Puyallup, WA
Posts: 235
|
Re: What Type of Oil To Use
I use Joe Gibbs HR2 10w30 with a six filter. 4 quarts in the pan and 1 in the filter.
|
05-26-2016, 11:55 PM | #10 |
The Niner
Join Date: Nov 2010
Location: Broad Brook, CT
Posts: 2,500
|
Re: What Type of Oil To Use
I've always run Kendall 10w-40. It's all but impossible to find in stores now so I buy it online.
__________________
"A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/ |
05-27-2016, 06:53 AM | #11 |
Registered User
Join Date: Apr 2016
Location: Marysville, Ohio
Posts: 48
|
Re: What Type of Oil To Use
|
05-27-2016, 11:02 AM | #12 |
Registered User
Join Date: Mar 2016
Location: Midlothian, TX
Posts: 55
|
Re: What Type of Oil To Use
I've switched countless engines from traditional to full synthetic and blends and NEVER had problems with leaks. In fact the opposite was true. I've had small leaks go away after using synthetics. Leaks happen because the seals are bad. The truth and science is that synthetics are superb in every regard over traditional oil. The only issue is the lack of zinc and lead which protected the camshaft and lifters. But thats gone form traditional oils too. In fact you may hasten the wear on your old engine by continuing to use traditional oils, which lack protections the original engine oils had due to the lead in the fuel. There is a reason modern engines do so well with synthetics, its far and away a superior lubricant, wear prevention, stable viscosity, and resistance to build-up. You can also drop from the heavy viscosity as rdhowe stated. Just watch the pressures, you want at least 10 PSI for every 1000 RPM, that ole six will feel spirited due to friction loss if you can get away with say 5w-30 or 10w-40
__________________
1970 GMC Stepside Short Gone...Factory 350 V8 Now...4.8L LS |
05-27-2016, 11:19 AM | #13 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
|
Re: What Type of Oil To Use
Follow the manual. It was right then for these motors, and it's right now for these motors. Oil has improved (and devolved in some ways too), but viscosity is viscosity.
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
05-27-2016, 11:49 AM | #14 |
Senior Member
Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
|
Re: What Type of Oil To Use
Whatever oil you use, it needs to have "Zinc" in it! Also known as (ZDDP) "Zinc Phosphate" or "Zinc Dithiophosphate"...Google those names and do your own research. I will say this, any flat tappet motor using alloys and tolerances from yesteryear needs a certain degree of zinc (ZDDP) to survive...
__________________
Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American" |
05-27-2016, 01:13 PM | #15 | |
Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,329
|
Re: What Type of Oil To Use
Quote:
As far as leaks go, I used Durablend from 1993-2015. The engine was rebuilt in 1993. Yeah it leaks, but never enough to have to add oil. I would imagine it's the rear main, but I'm no expert. The valve covers are fine. It started leaking almost right away following the rebuild. Oil related? I'm guessing not.
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
|
05-27-2016, 04:59 PM | #16 |
Registered User
Join Date: Apr 2009
Location: houston texas
Posts: 1,438
|
Re: What Type of Oil To Use
believe what you want. I have seen motors that have been run on standard oil that were switched to synthetic. it will find leaks that were no visible because of sludge build up around gaskets .it has a higher detergent content or less viscosity or some reason that causes this. maybe not in every case but I have seen it happen.
|
05-27-2016, 06:22 PM | #17 | |
Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,329
|
Re: What Type of Oil To Use
Quote:
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
|
05-27-2016, 07:00 PM | #18 |
Registered User
Join Date: Aug 2015
Location: Pine Mountain, Georgia
Posts: 125
|
Re: What Type of Oil To Use
Valvoline 10w30...
__________________
71 C10 I6 250 TH350 power steering and power breaks... |
05-27-2016, 07:08 PM | #19 |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
|
Re: What Type of Oil To Use
I've done a respectable amount of reading on ZDDP, and here's what I'm currently doing with my old Chevy V8's that has worked thus far:
During break-in, conventional oil with a full dose of ZDDP additive or ZDDP-rich break-in lube. Afterward, syn blend (Schaeffer's 10w30 in my truck's 120,000 mi. 454, Valvoline 10w40 in my 'Burb's history-unknown 350) with no, or only a half bottle, of ZDDP additive. My dad's '86 K20 racked up 361,000 mi. before he quit driving it in about '08 - it always had conventional 10w40 (20w50 in hot weather, IIRC) with no zinc added and it never showed noticeable cam problems, so for our stock, low-perf (aka, low valve spring pressure) truck engines I think ZDDP is as unnecessary as it would be in any old engine, and if they can do what some of them did on conventional oils back then today's synthetics (a superlube in comparison) are overkill any way you slice it.
__________________
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. |
05-28-2016, 12:47 AM | #20 |
Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
|
Re: What Type of Oil To Use
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
05-28-2016, 10:47 AM | #21 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: What Type of Oil To Use
a used engine eith 125000 miles the damage is already done no amt of zinc or kryptonite will do anything to magigicly save it
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
05-28-2016, 10:58 AM | #22 |
Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
|
Re: What Type of Oil To Use
52 k on top end rebuild, Valvoline VR-1 the whole time. And headed out to work this morning.
|
05-28-2016, 12:01 PM | #23 | |
Registered User
Join Date: Dec 2011
Location: winnipeg
Posts: 1,107
|
Re: What Type of Oil To Use
Quote:
|
|
05-28-2016, 12:44 PM | #24 |
Senior Member
Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
|
Re: What Type of Oil To Use
This debate has gone on forever , use whatever oil makes you happy and toss in some stp oil treatment , the young guys don't understand the old engines and the old guys the same for new , so rather than play mines better be happy with what your using .
__________________
1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
05-28-2016, 12:48 PM | #25 |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
|
Re: What Type of Oil To Use
The link 71chevyshortbed402 posted is interesting. I didn't read every word, but from scanning it I don't see any holes in his logic and, coupled with what I've seen with my own eyes, am persuaded to put some stock in his findings. Interesting that several weights of Valvoline MaxLife make it into the top 25? on the EP protection list.
Here's what I know - Valvoline is, and has been for along time, regarded as a high-quality oil. I've seen two different 350's, designed in the same era as your inline six, go past 350,000 miles without indications there was anything lacking in the oil used in them, and countless other cars with all kinds of different engines run many, many wear-free miles with 10w30 or 10w40 Valvoline products. I'm not going to stand on my soap box (like, say, the ZDDP preachers) and say it's obviously and indisputably the best, but I have enough "real world R&D" with it that I trust it as much as any widely available lubricant. Use what your conscience, influenced by our opinions and your own research, will be most at rest with, but for me it's Valvoline MaxLife.
__________________
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. |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|