Castro date code

[candyman123]

I have a gallon of Castro edge 10w30 high mileage full syn oil. I was going to get rid of it but I can’t remember when I bought it. I finally found what I think is the date code but can’t figure it out. It’s on the back just below the label. It’s black on black. The series is Y21195 1638 j2. If I read this right, y=year, 21=2021 & 195 is the Julian date. (Day of the year). Am I correct?

 

[Warstud]

I have a gallon of Castro edge 10w30 high mileage full syn oil.

Never heard of it. Is this some new Cuban oil ?

 

[wemay]

 

[ATex7239]

Never heard of it. Is this some new Cuban oil ?

I don’t find Communist jokes funny cause not everyone gets them…

 

[wemay]

You'll be fine. Castrol uses a robust foil seal that keeps the oil fresh. I would use it going back to 2010.

 

[blufeb95]

That should be correct, if it says API SP/ILSAC GF-6 then yes it's from June of last year.

 

[Rand]

Castro Date code expired on 112516

 

[aquariuscsm]

I'm always torn between three oils every time I do an oil change. Castro, Mobile 1, and Quacker State

 

[candyman123]

Never heard of it. Is this some new Cuban oil ?

 

[kschachn]

I have a gallon of Castro edge 10w30 high mileage full syn oil. I was going to get rid of it but I can’t remember when I bought it. I finally found what I think is the date code but can’t figure it out. It’s on the back just below the label. It’s black on black. The series is Y21195 1638 j2. If I read this right, y=year, 21=2021 & 195 is the Julian date. (Day of the year). Am I correct?

Also if you're getting rid of it, why does the date code matter?

 

[candyman123]

Yep I didn’t proof read it

 

[candyman123]

Also if you're getting rid of it, why does the date code matter?

I thought it was older than it is. If it’s still good I’ll use it, if not I’ll toss it.

 

[candyman123]

Sorry I didn’t proof read it.

 

[kschachn]

I thought it was older than it is. If it’s still good I’ll use it, if not I’ll toss it.

How old would it have to be before it goes bad?

 

[candyman123]

Sorry I didn’t proof read it.

Actually it’s a BP plant. Guess it’s an english plant

 

[candyman123]

How old would it have to be before it goes bad?

I’m getting conflicting reports. Anywhere from 3 - 5 years. 7 tops. I just don’t remember if I bought it in 2009,2011 or whenever

 

[Snagglefoot]

I would only find an oil unacceptable if it was older than the SN designation but would still run it in my lawnmower. API SN came out in 2010. Raul says hi.

 

[kschachn]

I would only find an oil unacceptable if it was older than the SN designation but would still run it in my lawnmower. API SN came out in 2010. Raul says hi.

Based upon your preference for the specific license or because you think the oil has gone bad since then?

 

[candyman123]

I would only find an oil unacceptable if it was older than the SN designation but would still run it in my lawnmower. API SN came out in 2010. Raul says hi.

That was the problem. At first I couldn’t find the code. When I did, it was an open container. When I moved here I bought a bunch in 2008. By checking this web page, it told me where to look. I have 4 trimmers, 2 tillers and 2 riding mowers to clean up. And before I’m asked, nope, I don’t have a business I have acquired them from deaths in the family or purchases

 

[Snagglefoot]

Based upon your preference for the specific license or because you think the oil has gone bad since then?

Just the license. I don’t believe any oil goes bad as long as the container is sealed. But fortunately oil improvements happen at a fast enough clip that it’s a moot point to me.