Engine lubricants: How old is too old?

[timflan]

I've got some fluids I would like to use for this spring's maintenance. The issue: I don't do my own maintenance every single year, so some of the lubricants I have on hand are 4 or 5 years old. Do they degrade? Can I still use them?

Here's what I'm intending to use:
Power trim/steering fluid
Gearcase lube oil
Grease

Thanks!

 

[Captains Cat]

Try THIS LINK

Charlie

 

[timflan]

Excellent...thanks! Looks like I'm OK this year, and I'll buy new next year.

 

[Levitation]

Ummm, these products started out a few hundred million years old.
Not sure that an extra year or two really means much.

 

[Captains Cat]

Ya, Denny but methinks the additives didn't come from the dinosaur age. That may be the age concern... Along with the OLM wanting to sell more "L". L=Lubricant! :wink:

Charlie

 

[BrentB]

Try THIS LINK

Charlie

Thanks Commander

The article is very informative and well written by an engineer.

 

[BrentB]

I goofed

I had no intention in demoting Charlie so excuse my ignorance and his rank of Captain has not changed

sorry Charlie

 

[Captains Cat]

So, now I'm not only demoted, but I'm a TUNA too?

I are also an Engineer, Electrical tho and not Petroleum!

Thanks BugMan, you are more than forgiven!

Charlie :lol:

 

[BrentB]

I like catsup with my crow :smileo

 

[Captains Cat]

You should try horseradish to go with all the horsesh__ we both dish up!

 

[BrentB]

that is correct

We can have a 9 course meal of BS