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#1 |
Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Oil Weight?
What weight oil are you guys running in your trucks? I have been running Rotella 15w-40 in the warmer months and just switched to 10w-30 for my morning start ups. It's been in the 20's here in GA the past few mornings. I would like to know how light I can go. Would 5w-20 be too light for out engines? I have an early model built 350. Thanks guys-
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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#2 |
Senior Member
![]() Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,873
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Re: Oil Weight?
Rarely gets into the 20s here. I use 10-30 all year now in pretty fresh 350. I used to go with 20-50 Castrol GTX in summer (100+ Deg.) I think 10-30 would be right for you too.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
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#3 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Oil Weight?
In my truck, which gets a couple of starts per year at -10F and below, I run 10w30 year round.
My daily driver, a 94 Escort that gets a couple of starts per year at -20F and below, gets 5w30 year round. The '04 Explorer I maintain for my wife gets 5w20 year round because that is what Ford specs for it. I'd stick with 10w30 in the winter down there in an older 350. Or a newer 350 for that matter.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#4 |
Registered User
Join Date: Oct 2006
Location: Washington
Posts: 316
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Re: Oil Weight?
10-30 for both my C10 and Regal all year round
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1970 C10 - ECE 3.5/5 drop, dual exhaust with turbo mufflers, front discs http://67-72chevytrucks.com/vboard/s...d.php?t=272458 2000 Buick Regal GS - Supercharged 3.8 V6 240hp, 1/4 mile 15 seconds |
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#5 |
Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: Oil Weight?
i used to run 20-50 but i switched to rotella 15-40 for the zinc
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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#6 |
Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Re: Oil Weight?
Thanks fellas, thats what I wanted to hear. I'll stick w/ the 10w-30 until the temps creep back up.
Happy New Year!
__________________
Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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