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Oil weight inMissouri
#1377203 Wed Sep 16 2020 12:45 AM
Joined: Oct 2000
Posts: 224
B
Shop Shark
I moved to Missouri from California and my 1953 GMC with a 55 Chevy 235 engine needs an oil change. What weight oil should I use? I believe the last oil was 5-30 weight before it was stored. The truck is garaged If that has any impact.

Re: Oil weight inMissouri
buckaroo01 #1377209 Wed Sep 16 2020 12:54 AM
Joined: Aug 2001
Posts: 4,388
2
Shop Shark
What part of Missouri did you move to? Check out the Heartland threads to see what may be going on.

Myself, I run Rotella 15-40 in everything except the engines that require synthetic.
Being that it is garaged, I would think 5-30 would be a little thin for a engines of those years.

Hopefully HRL will give us his thoughts!
Don


Of all the things I've lost in my life, I miss my mind the most!

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery [stovebolt.com]
More pix on Photobucket [s893.photobucket.com]
'46 2-Ton grain truck
'48 3/4-ton grain truck
'50 2-ton flatbed
'54 Pontiac Straight Eight
'70 American LaFrance pumper fire truck.
Re: Oil weight inMissouri
buckaroo01 #1377220 Wed Sep 16 2020 01:39 AM
Joined: Feb 2004
Posts: 21,005
H
Boltergeist
I've been expressing my opinion on oil weights for years, and I'm getting ignored, ridiculed, and accused of being an ignorant liar. It's somebody else's turn on the bullseye. I use Traveler brand 15W-40 that I buy from Tractor Supply Co. in 5-gallon pails in every 4-atroke engine on the place- - - -tractors, cars, trucks, lawn mowers, generators, a Harley Soft Tail, and a pressure washer. No oil-related failures in the 30-something years I've been doing that!
Jerry


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Re: Oil weight inMissouri
buckaroo01 #1377261 Wed Sep 16 2020 11:46 AM
Joined: Aug 2005
Posts: 9,120
Master Gabster
I use Mobil Delvac 15W-40 in both my old cars. 5 weight is too thin IMHO. A lot of folks like 10W-30 and have good luck with it but I feel it's still a tad too thin. Any 15W-40 that meets current spec will do just fine. You don't need to pay the Rotella price. The Delvac is 50-60% the price of Rotella.


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Re: Oil weight inMissouri
buckaroo01 #1377278 Wed Sep 16 2020 01:51 PM
Joined: Sep 2013
Posts: 1,043
M
Shop Shark
I run 15W40 Walmart diesel oil summers in my '51, at the winter change I do with Walmart 10W30.

For decades I used Delo 15W40 in our diesel trucks. Then I switched to Walmart Tech 15W40 (dino) oil a few years ago. In every oil comparison I've seen it ranks near the top in all categories that count. My Old Dodge Cummins diesel is at 300k and no engine problems. One nice benefit of the 15w40 is the higher viscosity quietens down the '51 3600.


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A



Re: Oil weight inMissouri
buckaroo01 #1377282 Wed Sep 16 2020 02:15 PM
Joined: Sep 2010
Posts: 597
K
Shop Shark
In reading theses posts I take that diesel oil is good for gas engines like in a 235.My local Canadian tire has a 5 gallon pail on sale this week


kevinski 1954 GMC 9300 Welcome to the virtual Garage
Re: Oil weight inMissouri
KEVINSKI #1377326 Wed Sep 16 2020 07:19 PM
Joined: May 2015
Posts: 2,759
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Originally Posted by KEVINSKI
In reading theses posts I take that diesel oil is good for gas engines like in a 235.
I've never seen a diesel oil that didn't have an API "S" (Spark) designation as well as a "C" (compression) designation on it.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Oil weight inMissouri
buckaroo01 #1377348 Wed Sep 16 2020 10:00 PM
Joined: Sep 2010
Posts: 597
K
Shop Shark
So is this what most use

Attached Files

kevinski 1954 GMC 9300 Welcome to the virtual Garage
Re: Oil weight inMissouri
buckaroo01 #1377349 Wed Sep 16 2020 10:27 PM
Joined: May 2015
Posts: 2,759
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Well, I just checked out Shell Rotell T4 and it doesn't list SN classification which is for gasoline engines. But I wouldn't be afraid to use it in a gas engine. Diesel oils are much heavier duty than gasoline only rated oils in general.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Oil weight inMissouri
buckaroo01 #1377352 Wed Sep 16 2020 10:41 PM
Joined: Aug 2005
Posts: 9,120
Master Gabster


Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
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