Using an older rated API in a reman engine for a older vehicle

[Natek2500]

My question is that I am currently in the process of installing a new reman 5.7 vortec engine in a 1996 k2500. My grandma had bought cases and cases of amoco ultimate good 5w-30 conventional motor oil back in the 90s. Now I have been using this regularly in my 1994 Chevy k1500. I am wondering if I can go back with this oil in the reman vortec engine. Have lots of it left and would like to get some use out if it. Thanks

 

[Chris142]

According to lake speed jr it's no longer serviceable.

 

[JavierH19]

Just drain the bottle to about 1/3-1/4 and shake it up for 3-4 seconds. I think a voa of a 40 year old oil was done and it looked like any other oil with a tbn over 6 and normal additive counts. But if the additives are out of suspension or especially if it was contaminated then yeah it's not good to use. I'd use it.

 

[Pablo]

I got stuck on grandma buying cases of oil

How much sediment at the bottom of the bottles?

 

[slacktide_bitog]

Get a VOA done on that oil first

 

[Urshurak776]

I had a couple quarts from like 2009 I found when we moved in 2019. I used them in the lawn mowers. Not sure I would use them in the car though. 90's? Does the rating on the oil meet the specs of the engine? If so, Shake the heck out of it.

I still would probably not use it though. Nothing to do with lickity split lake speed dude, I don't watch him.

 

[Natek2500]

Honestly I have never checked for sediment in the bottom of them. I have been using it in the 94 TBI 350 going on 4 years and about 20,000 miles and hasn’t hurt it a bit.

 

[fantastic]

Honestly I have never checked for sediment in the bottom of them. I have been using it in the 94 TBI 350 going on 4 years and about 20,000 miles and hasn’t hurt it a bit.

Can you post a pic of the API label on the bottle?

 

[Natek2500]

 

[twX]

Oil standards have come a long way since API SH. The age of the oil also makes it questionable. I'd use it in a lawnmower. I'd use it in a zombie apocalypse. I wouldn't put it in an engine I really cared about just to save 20 bucks.

 

[DanL13]

If you don’t want to use it I will. I’m not picky. I also have a plethora of junk to run it in lol.

 

[Natek2500]

I agree maybe just not use it unless it’s some old junk, so my other question is. What is the best conventional motor oil to break the new engine in with as they recommend not using synthetic for the first 5-6000 miles.