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Re: Best oil for chevy235
59chevy36 #1347506 Sat Feb 22 2020 07:06 PM
Joined: Sep 2001
Posts: 29,874
ace skiver


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE [1954advance-design.com] - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Best oil for chevy235
59chevy36 #1347508 Sat Feb 22 2020 07:27 PM
Joined: Jan 2013
Posts: 1,622
S
Shop Shark
If you like Shell Rotella get the T4 it has enough zinc for flat tappet cams too.
Lots of options but stay away from synthetics if you have been running dino oils in the past. IMHO


1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
https://www.youtube.com/watch?v=Bli...n05i04t1aokgm4p04jiwgffwhyyih5xbk0h00410
1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration
Re: Best oil for chevy235
sstock #1347521 Sat Feb 22 2020 10:00 PM
Joined: May 2015
Posts: 2,285
K
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Originally Posted by sstock
Lots of options but stay away from synthetics if you have been running dino oils in the past. IMHO

I have yet to hear a first hand story about leaky seals when changing from dino to synthetic. Usually, it's "My second cousin's brother in law's uncle........" Just saying. ohwell


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: Best oil for chevy235
59chevy36 #1347525 Sat Feb 22 2020 11:04 PM
Joined: Mar 2014
Posts: 1,305
J
Shop Shark
Buy 30 weight Valvoline VR-1 from Amazon.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: Best oil for chevy235
59chevy36 #1347531 Sun Feb 23 2020 12:48 AM
Joined: Dec 2008
Posts: 1,415
P
Shop Shark
Notice that 30 weight is not listed in the original specs.
Why? A joke:
"The number before the W of a multi-weight oil (or the only number of a single weight oil) is the time in seconds it takes for full pressure to reach the farthest bearing in the engine".
5W30: 5 seconds
20W50: 20 seconds
50: 50 seconds
As mileage increases leakage from the bearings, it takes even longer...

Heavy weight oil is a good idea, if the oil and the engine are both at 212 degrees when you start it.

Re: Best oil for chevy235
59chevy36 #1347532 Sun Feb 23 2020 01:09 AM
Joined: Jan 2013
Posts: 1,622
S
Shop Shark
Originally Posted by klhansen

I have yet to hear a first hand story about leaky seals when changing from dino to synthetic. Usually, it's "My second cousin's brother in law's uncle........" Just saying. ohwell



Go ahead and give it a try then, I just wrote that because it did happen to me in my 94 ford pickup.

Last edited by sstock; Sun Feb 23 2020 01:10 AM.

1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
https://www.youtube.com/watch?v=Bli...n05i04t1aokgm4p04jiwgffwhyyih5xbk0h00410
1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration
Re: Best oil for chevy235
59chevy36 #1347677 Mon Feb 24 2020 01:32 AM
Joined: Feb 2016
Posts: 362
7
Shop Shark
When I put the 283 back in my 2 ton I filled it with Valvoline 5w-30 full synthetic 'cause that's what I had on hand. I did not do any machine work on the engine, just a cam, lifters, gears and chain that I took out of a 350 from a prior build. I cleaned the oil pump screen, new front seal, pan gasket, intake gasket, left the original rope seal in the rear main. No leaks and it runs great with no smoke. I also was concerned about running synthetic in it but I have no worries now.


1957 Chevrolet 5700 LCF 283 SM420 single speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto
Re: Best oil for chevy235
59chevy36 #1347684 Mon Feb 24 2020 02:11 AM
Joined: Nov 2019
Posts: 46
P
Wrench Fetcher
I used full synth for the first time in anything about a month ago. Put it in my wife's escalade and liked it so much I put it in everything I have including 1946 Chevy 2 ton. It really smoothed the 46 out the most. Much quieter, idles and runs smoother and stronger. Leaks, well it still leaks but cant really tell the diff on that. Starts up at zero degrees just like it did at 70.

Pat


1946 PW Grain truck, 1966 C10 long stepside, 1972 C20 Custom Camper Big Block, 1975 C10 Silverado OE big block.
Re: Best oil for chevy235
78buckshot #1347697 Mon Feb 24 2020 03:27 AM
Joined: Jan 2013
Posts: 1,622
S
Shop Shark
Originally Posted by 78buckshot
When I put the 283 back in my 2 ton I filled it with Valvoline 5w-30 full synthetic 'cause that's what I had on hand. I did not do any machine work on the engine, just a cam, lifters, gears and chain that I took out of a 350 from a prior build. I cleaned the oil pump screen, new front seal, pan gasket, intake gasket, left the original rope seal in the rear main. No leaks and it runs great with no smoke. I also was concerned about running synthetic in it but I have no worries now.


Believe rope seals fair better against synthetics than neoprene seals on the rear mains, no empirical data just my own thinking.


1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
https://www.youtube.com/watch?v=Bli...n05i04t1aokgm4p04jiwgffwhyyih5xbk0h00410
1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration
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