Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: does oil go off?
MikeR

posted on 28/4/20 at 01:06 PM Reply With Quote
does oil go off?

So i'm close to startig a xflow engine thats not started for 15 years. I was thinking i should change the oil before i try starting it (*). I've got some cheap 20w50 oil (cheap as in ASDA smart price cheap) from 15 years ago. Its not easy to get more oil at the moment and the engine is just going to be used to setup electronic ignition and hopefully fuel injection whilst in the garage.

Will the ASDA oil be ok for a few start ups or does oil go off? i've got 5l still sealed and about 1l in a 5 litre container.

(*) Prior to being put away the engine had an oil change and then only did a few hundred miles along with some periodic start ups to get the engine up to temperature and battery charged. Once put away the engine had every 3 to 6 months WD40 or occasionally oil added to the bores and turned over by hand - although that stopped 5 to 7 years ago. Turning over now its free, you feel compression and a hiss when the exhaust valve opens. (mentioning this so someone will reassure me its fine to run for a few start ups without an oil change).

View User's Profile View All Posts By User U2U Member
rusty nuts

posted on 28/4/20 at 01:22 PM Reply With Quote
Oil in a sealed container isnt likely to deteriorate, chances are the oil in the engine would be OK but it would pay to prime the oil pump as any oil that was in it may have drained. I used some cheap 20/50 for running my engine in before changing to Millers 20/40 , not really sure about changing to something like 10/40 semi synthetic but might give it a try
View User's Profile View All Posts By User U2U Member
flak monkey

posted on 28/4/20 at 01:29 PM Reply With Quote
If the oil that's in it has been used, especially on short runs 'up to temp' (*) then drain it.

It will be contaminated with water etc. However for a short run to see if it works then there isn't much harm. Once you know it runs, drain it and fill with fresh.

* most 'up to temp' runs are anything but. While water temp might show fully hot, the oil temps rarely are and they aren't long enough to boil off any water vapour/condensation which builds up over the course of these 'short' runs.

[Edited on 28/4/20 by flak monkey]





Sera

http://www.motosera.com

View User's Profile Visit User's Homepage View All Posts By User U2U Member
ReMan

posted on 28/4/20 at 03:46 PM Reply With Quote
Yes for 10 worth of oil I'd change it and I'm a proper skinflint with oil!





www.plusnine.co.uk
∙،. ˘≈ﺣ

View User's Profile Visit User's Homepage View All Posts By User U2U Member   ReMan 's ICQ status
steve m

posted on 28/4/20 at 06:47 PM Reply With Quote
I for many years used cheap asda 20/50 oil to do intial startups and running in, and all on my xflows, and once I hit a couple of hundred miles put in Millers 20/50 and gave the engine a good thrashing

the oil in the engine now is not ok to use, to much water content





Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at




View User's Profile View All Posts By User U2U Member
907

posted on 29/4/20 at 01:05 AM Reply With Quote
The mineral oil in the lotus is about ten million years old. Runs fine.




View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply


go to top






Website design and SEO by Studio Montage

All content 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [ 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.