what oil to use in my L6 and 3spd. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Triple6Goat · 11-01-2010, 05:02 PM

Im about to do a much needed oil change and want to make sure I put the correct oil in my truck. Also im about to drain the 3spd. trans and refill it. Do I use 10w-30 for the engine and 80w-90 for the 3spd.? I searched and couldnt find a thing.

jchav62 · 11-01-2010, 06:03 PM

I think you are safe with your choices.

62gmc910 · 11-01-2010, 09:54 PM

You would be best to use a diesel oil CI -4 10w30 if you can find it , oil for modern gas engines doesn't have enough Zinc in it to lube the flat tappets (cam followers/lifters) http://www.bobistheoilguy.com/forums/ubbthreads.php
look around in this link for a deeper explanation

Triple6Goat · 11-02-2010, 11:49 AM

Thanks for the help guys, I appreciate it.

Shaky · 11-02-2010, 06:06 PM

A little more discussion about engine oil:

http://67-72chevytrucks.com/vboard/s...d.php?t=427875

Triple6Goat · 11-04-2010, 02:53 PM

Quote:

Originally Posted by Shaky

A little more discussion about engine oil:

http://67-72chevytrucks.com/vboard/s...d.php?t=427875

Good link, I think im gonna use 15w40 rotella oil. I just hope Orielly's gave me the correct oil filter.

62gmc910 · 11-05-2010, 02:57 PM

Quote:

Originally Posted by Triple6Goat

Good link, I think im gonna use 15w40 rotella oil. I just hope Orielly's gave me the correct oil filter.

We use wix 51060 anti drainback ,replaces long chev spin on , keeps the filter full instead of 1/2full at start up

As to the lucas , I don't know , the zinc additive is what is missing in new "gas" engine oil, they mostly have roller lifters

Rotella t or its equivalent is cheapest , wallmart supertech owneroperator oil has had good reports

66coffin · 11-04-2010, 09:49 PM

what do you guys think of that Lucas oil additive? Any good for the same application as triple6goat?

bama63 · 11-05-2010, 02:17 PM

Lucas oil additive is really great stuff i use it in everything i own including my lawn mower

11-01-2010, 05:02 PM	#1
Triple6Goat Registered User Join Date: Jul 2009 Location: panama city beach, FL Posts: 59	what oil to use in my L6 and 3spd. Im about to do a much needed oil change and want to make sure I put the correct oil in my truck. Also im about to drain the 3spd. trans and refill it. Do I use 10w-30 for the engine and 80w-90 for the 3spd.? I searched and couldnt find a thing. __________________ 1984 C10 swb 1985 K20 longbed 4spd 1977 K10 longbed -SOLD 1962 Chevrolet C10 swb 6cyl. 3spd. -SOLD

11-01-2010, 06:03 PM	#2
jchav62 1962 C-10 Join Date: Apr 2005 Location: Las Vegas, New Mexico Posts: 4,978	Re: what oil to use in my L6 and 3spd. I think you are safe with your choices. __________________ Joseph Chavez "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4

11-01-2010, 09:54 PM	#3
62gmc910 Registered User Join Date: Nov 2009 Location: Cremona AB Canada Posts: 370	Re: what oil to use in my L6 and 3spd. You would be best to use a diesel oil CI -4 10w30 if you can find it , oil for modern gas engines doesn't have enough Zinc in it to lube the flat tappets (cam followers/lifters) http://www.bobistheoilguy.com/forums/ubbthreads.php look around in this link for a deeper explanation __________________ 62 GMC 910 short fleetside 454 super t10 14 bolt w/gov lock 70s c20 front discs (built in the 80s) 65 GMC 930 dualwheel 292 4spd all origonal 39k mi(my sons truck) 63 GMC 950 camperized school bus, (Gus the bus) 350 4speed 2 speed rear 64 GMC 950 "spare" bus 283? 4speed detroit locker 53 GMC 1ton dual wheel bus 78 GMC c25 short course off road race truck(son's truck) 355 th400 14 bolt (www.wheel2wheel.ca) 88 Peterbilt 379 longhood (hauls race truck)

11-02-2010, 11:49 AM	#4
Triple6Goat Registered User Join Date: Jul 2009 Location: panama city beach, FL Posts: 59	Re: what oil to use in my L6 and 3spd. Thanks for the help guys, I appreciate it. __________________ 1984 C10 swb 1985 K20 longbed 4spd 1977 K10 longbed -SOLD 1962 Chevrolet C10 swb 6cyl. 3spd. -SOLD

11-02-2010, 06:06 PM	#5
Shaky Six in a row makes it go... Join Date: Mar 2009 Location: Vacationland: Maine Posts: 1,346	Re: what oil to use in my L6 and 3spd. A little more discussion about engine oil: http://67-72chevytrucks.com/vboard/s...d.php?t=427875 __________________ 67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce

11-04-2010, 09:49 PM	#8
66coffin Registered User Join Date: Dec 2009 Location: diamond bar, calif. Posts: 206	Re: what oil to use in my L6 and 3spd. what do you guys think of that Lucas oil additive? Any good for the same application as triple6goat? __________________ '66 c10ish straight 292 power!

11-05-2010, 02:17 PM	#9
bama63 Registered User Join Date: Jun 2010 Location: gadsden, alabama Posts: 468	Re: what oil to use in my L6 and 3spd. Lucas oil additive is really great stuff i use it in everything i own including my lawn mower __________________ Due to financial constraints, the light at the end of the tunnel will be shut off until further notice



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