TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Discussion Forum

350 c. i. chevy truck

Welcome Guest, Log in or Register

Author

chainsaw

09-14-2002 20:49:44

Report to Moderator

i've got a 93 chevy 2500 4x4 5sp 7300 gvw. had the
oil changed at dealer and they put in 5w30 instead of 10w30. i took a road trip to south louisiana from central texas and immediately noticed the oil pressure was lower and the operating temp. was higher with the "5w30." when i returned to texas, i had the oil changed back to "10w30" and the oil pressure went higher and the operating temp. was lower. current replacement crate engine has appr.50,000 miles on it, good condition no smoke. my question is why ?
general engine wear ? thanks to all for all replies. chainsaw

[Log in to Reply] [No Email]

JDJIM

09-16-2002 20:33:26

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

We have a half dozen Chevys around here most 454's couple 350's all have lots of miles on them 50-150,000 , run 15-40 regular diesel tractor oil Dello RPM 400 . Only time I use anything lighter is when we get a real cold snap then I use 10-40 . Unless it's a new engine 50,000 or less I think anything lighter than 10-30 is too light especially in summer . I'm in north central Illinois . For these new so called high-tech ohc and dohc 4v engines that rev up to 1500rpm at starting I would say 5 or 10-30 is probably the way to go in order to get instant lubrication , I don't have any of them so I'm just guessing on that .

[Log in to Reply] [No Email]

paul tx

09-15-2002 21:49:59

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

hey chainsaw, I run a CK 3500 with a 350 and I started with 10 30 , then as soon as I rolled 60,000 I went to 20 50 .You say yer from central TX, so It rarely gets very cold there but it does get very hot. down here in south tx the 20 50 works very well ,even in winter theres only 7 or 8 nights that it gets down to freezing so I run it all the time. just dont't get in no races after I first crank it up! Got a 160,000 K on it now and only needs about a pint every 4000 miles. I've done this same routine with my last 5 vehicles with nearly identicle results: So I'd say get a few miles on it then swap. Main thing is to keep changing that oil & filter. I hadn't had to replace a motor yet! Hope this sheds some light on it for you ..... Paul

[Log in to Reply] [No Email]

Glenn(WV)

09-15-2002 19:15:32

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

Chainsaw, I can offer this:

What you experienced with the 5W30 may not be out of line. My uncle changed the oil in my tractor some time back and he used a multigrade in it(At the time, I didn't know he put multigrade in it). The pressure seemed low, especially when the engine was hot, so I changed it and put the recommended straight 30-weight in it. The oil pressure jumped some 10 psi due to the heavier oil.

As for the temperature, I'd say that the thinner oil just couldn't carry off the heat as well as the 10W30; since that heat has to go SOMEWHERE and the oil couldn't carry it off, it went into the cooling system and you saw it in the temperature gauge. As long as you didn't overheat it or run it with the oil pressure too low, I'd say you're OK.

[Log in to Reply] [No Email]

Leroy

09-15-2002 18:47:48

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

I don't mess with 10 - 30, I never use anything less than 10-40 and sometimes heavier

[Log in to Reply] [No Email]

Ludwig

09-16-2002 12:54:22

Report to Moderator

Re: Re: 350 c. i. chevy truck in reply to Leroy, 09-15-2002 18:47:48

You must be from the south. Here in New England you'd never keep a camshaft in an engine with that attitude. The oil starvation at startup would be catastrophic, the stuff just doesn't pour that well when its cold.

[Log in to Reply] [No Email]

Ludwig

09-15-2002 18:28:17

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

I dunno, I find something weird here. I'd have thought a 350 made any time after about 1988 would have called for 5w-30. I had an '88 GMC with the 2.8l 6 and it used 5w-30. I ran 10w-40 in the summertime because it didn't leak so fast, but other than that I saw no real difference.
I wonder about something else is going on here, different brand oil or something. You're sure none leaked out during your trip? My GMC used to leak a quart every thousand miles or so, even when it was really new.
How much lower was the oil pressure? Seems like the thinner oil might produce lower pressure but not a whole bunch. How much higher was the operating temp? Seems like it might get a little higher as the thinner oil wouldn't be able to carry the heat away as well, especially since most liquid cooled motors don't have remote oil coolers.
If your fuel mileage was the same, and the oil pressure wasn't really low and the temp wasn't overly high I wouldn't worry too much about it.

[Log in to Reply] [No Email]

DickTN

09-15-2002 17:27:13

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

Well, you got several answers, but no one commented on the increased operating temperature. It seems unusual, since you would expect that a little thinner oil would result in slightly less horsepower required to drive the oil pump. The only thing I can think of is that, with the thinner oil, there was more friction between moving parts requiring more horsepower to overcome friction. If this were the case, you might well have noticed decreased gas mileage, although you didn't mention that. Just my thoughts. DickTN

[Log in to Reply] [No Email]

A Man

09-15-2002 16:49:10

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

I always run 350 and i put mystic 15-50 in mine because I use mine like a semi I haul a lot of real heavy loads and so far I have got good service out of them personaly Myself I would not run 5-30 just not heavy even in very cold climate.

[Log in to Reply] [No Email]

09-15-2002 15:26:48

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

If you want use 5w30 on short trips in the colder winter months that would seem to make sense but if you go on any distance then change and use 10w30.

[Log in to Reply] [No Email]

Mac

09-15-2002 10:19:33

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

Myself, I would stay with the 10/30. Especially if you really "use" the truck. Seen a lot of vehicles that specify 5/30 but dealers use 10/30 around here. 5/30 is better in extreme cold temps however. Do you always use same type filter? Sometime different filters will cause a difference in oil pressure readings.

[Log in to Reply] [No Email]

glen

09-15-2002 05:04:31

Report to Moderator

Re: 350 c. i. chevy truck in reply to chainsaw, 09-14-2002 20:49:44

Are you sure they put in the right amount of oil on the first change?

[Log in to Reply] [No Email]

chainsaw

09-15-2002 07:38:11

Report to Moderator

Re: Re: 350 c. i. chevy truck in reply to glen, 09-15-2002 05:04:31

yes i always check the oil level and it was full.
i supplied a baldwin oil filter on the 5 w 30 oil change, and then the service mgr. failed to ask me what weight of oil i wanted and i also forgot to tell him 10w30, so that's how the 5w30 got put in my engine in the first place. i think 5w30 was too thin for this engine, thats all i can figure out. thanks, gatorhide

[Log in to Reply] [No Email]

ger

09-15-2002 13:45:29

Report to Moderator

Re: Re: Re: 350 c. i. chevy truck in reply to chainsaw, 09-15-2002 07:38:11

i think your right , and would stick with the 10w30 it gets cold where i live in the winter minus25 to 30 an if your battery is good an you plug it in let it warm up a bit in the morning i never have any trouble, gets in the 90s in the summer an i stick with the 10w 30 for for that reason 5 weight get to thin

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy