Farm Equipment - D 15 oil change

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D 15 oil change

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=188887
Printed Date: 22 Sep 2025 at 7:55pm
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Topic: D 15 oil change

Posted By: ACinSC
Subject: D 15 oil change
Date Posted: 15 Jun 2022 at 9:18am

Went to NAPA this morn . Counter guy said Rotella is unavailable . Anyone know of a good substitute ? Also wonder how often you fellas change the oil and filter in your low hour tractors ? Once a year ? THANKS !

Replies:

Posted By: steve(ill)
Date Posted: 15 Jun 2022 at 10:17am

I was changing the oil and filter every year... Got a sickle and wood mower "B"s that get about 25 hours a year... I have changed that to keep the filter for a couple years.. they never get dirty... Might stretch out the oil change also.

I have been using a good 10w30 motor oil in several small tractors for years.

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Like them all, but love the "B"s.

Posted By: ACinSC
Date Posted: 15 Jun 2022 at 10:32am

Thanks Steve . I was looking for Rotella mostly for the higher zinc additive . Prolly too late to worry about that anyway . Thanks , again !

Posted By: AC720Man
Date Posted: 15 Jun 2022 at 8:20pm

Rotella SAE30 is available locally at Walmart and other auto parts store. Especially designed for older tractors with high zinc.

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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD

Posted By: Ed (Ont)
Date Posted: 15 Jun 2022 at 8:40pm

Get some 15-40 at any truck store or TSC. Yes Shell is hard to get or at least the tier 4 stuff is. Our shop got of a bunch of Shell tier 3 that they are selling a bit cheaper. I got a pail of that. Perfect for the older units - don't need the latest spec for these old girls. Get some Mobil or whatever is in stock! The tier 3 Shell is in a black pail instead of the yellow and white pail.

Posted By: steve(ill)
Date Posted: 15 Jun 2022 at 8:41pm

if your running your tractor HARD and over 250 hours per year, you might consider the zinc........ if your running 2 hour every other week to cut the grass 6 months out of the year.... go with the 10w 30.

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Like them all, but love the "B"s.

Posted By: ACinSC
Date Posted: 16 Jun 2022 at 5:49am

My Walmart and TSC had no Rotella. I'll keep looking and figure something out. Thanks guys

Posted By: Lars(wi)
Date Posted: 16 Jun 2022 at 6:18am

For older tractors, I would recommend Mobil Delvac 1200 series. Available in 15w40, and 30wt. Find a ExxonMobil distributor, they should have it in their warehouse.

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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.

Posted By: ACinSC
Date Posted: 16 Jun 2022 at 10:11am

Finally bought some oil and zinc additive . Got my tractor up to 180 degrees . Pulled the drain plug and what first ran out looked the coolant to me ? Would coolant be in the bottom of the sump ? If it's coolant what could be the cause ? Blown head gasket ? THANKS for any help with this ! Should say this is a Series 1 gas engine , 149 I think .

Posted By: DrAllis
Date Posted: 16 Jun 2022 at 10:19am

If it is coolant, it had to come from the radiator. Is the radiator LOW ??

Posted By: ACinSC
Date Posted: 16 Jun 2022 at 10:32am

I think it's a little low . Waited a min for it to cool down . Also when I first pulled the plug the oil/coolant felt cool and then got pretty hot . Thanks !

Posted By: ACinSC
Date Posted: 16 Jun 2022 at 12:34pm

Just remembered back in March I noticed my oil fill/breather cap was pretty watery looking . Guess that was my first sign of a leaking head gasket ? Oh well

Posted By: ACinSC
Date Posted: 16 Jun 2022 at 2:08pm

I have this suspect oil in a couple clear containers . I'll check it in the morn and see what I find . Thanks

Posted By: Clay
Date Posted: 17 Jun 2022 at 7:14am

I bought Rotella at the Winfield Kansas, Walmart this week.