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View Full Version : Shelf Life of Oils and Brake Fluids.



Zhing1
4th November 2014, 08:12 AM
Hi Guys. Any Lubricants expert out there? I have around 10 liters of 10w40 fully synthetic oil as 1 liter of DOT5 brake fluid that was on stock for 4 years. All of them are sealed and we're placed in a dry storage space. Can any one tell me if I can still use them on my rig? Thanks.

Zhing1
5th November 2014, 12:50 AM
Come on guys. No one insights on this?

my third 256
5th November 2014, 07:27 AM
oil should be ok patrol gu's use dot 3

MudRunnerTD
5th November 2014, 07:35 AM
If they are sealed they should be fine. I would use it.

Zhing1
5th November 2014, 08:24 AM
Will there be issues if I used DOT5 instead of DOT5 on my rig?

Clunk
5th November 2014, 09:39 AM
Will there be issues if I used DOT5 instead of DOT5 on my rig?

No there won't be issues if you used DOT5 instead of DOT5, as long as your vehicle specifies the use of DOT5, then DOT5 can be used......... Otherwise you might need to use something that isn't DOT5

Zhing1
6th November 2014, 02:35 AM
Haha. I meant using DOT5 instead of DOT3.

my third 256
6th November 2014, 06:08 AM
on top of the brake fluid cap on the master cylinder is written your answer dot 3
they are different thicknesses and compress at a different rate

Zhing1
7th November 2014, 09:47 PM
I also found a gallon of engine coolant that's 5 years old. Is this still okay?

Zhing1
7th November 2014, 09:49 PM
So I can't use DOT5 on my rig because it only specifies DOT3? I was under the impression that the higher DOT rating, the better. What could go wrong if it pushed thru on using DOT3?

04OFF
8th November 2014, 08:43 AM
Pretty sure you will find all DOT 5 is Silicon based and so should never be mixed with any of the other Glycol based fluids (e.g. DOT 3), I believe its not a matter of just draining all the DOT 3 and flushing with DOT 5 either, due to the absorption of fluid by any rubber in the system (seals/hoses), and so best only to be used on a newly built braking system where all components/rubber lines are new and advised suitable to use with Silicone based fluid.

my third 256
8th November 2014, 08:54 AM
hey mate you got a good rig why in the hell do you want to take a chance on old fluids
dont be a cheep scate spend some money

zucan
8th November 2014, 09:15 AM
i was really peeved at having to put a brand new tyre in the bin the other day I bought a 2nd hand BA Ford for daily drive and it has aloys and a steel spare and the spare in the original tyre from 2004 and now any tyres over 6 or 7 years are not to be used because they may delaminate the guy at the tyre place said

and some guy on the john Law was talking about a special $10k insulin pump his daughter has he said after 4 or 5 year you get a message in 1 month this pump will stop and you have to replace it another 10k why the John Law show was looking into it

so a couple of dollars for my tyre is nothing compared to 10k for a insulin pump that can save a persons life

Zhing1
8th November 2014, 07:34 PM
Good point guys. I'll just stick to DOT3.