29 replies to this topic

[locky7101]

so thats for running your engine on day to day use, what would you reccomend for bedding an engine in? penrite running in oil? or is there something better or cheaper?

[lrostoke]

Wonder if the OP is still confused by oil, I did say first reply you'd get plenty of replies stating one oil or another

Seems to be the same everytime an oil question is asked , there just doesn't seem to be a standard answer

I think the main thing is regular changes is the key.

[taffy1967]

so thats for running your engine on day to day use, what would you reccomend for bedding an engine in? penrite running in oil? or is there something better or cheaper?

Surely someone here must know which is the correct oil for running in a new engine. I remember it being said (possibly on another forum?), but I can't remember.

[locky7101]

QUOTE (locky7101 @ Mar 10 2010, 07:02 PM)
so thats for running your engine on day to day use, what would you reccomend for bedding an engine in? penrite running in oil? or is there something better or cheaper?



Surely someone here must know which is the correct oil for running in a new engine. I remember it being said (possibly on another forum?), but I can't remember.

everyone says plain mineral oil but never really say where from or what make or anything, i'm building a 1380 pretty soon so getting the right oil may be useful

[vladimir]

can you tell me about 20W60 oil?THAT"S OIL OK FOR MINI ENGINE OR NO?

[taffy1967]

Would this be suitable?: -

Click Me 1

Or try asking Doddy (i.e. AC Dodd)?: -

Click Me 2

After a search on that forum, I found this: -

Hello

I'm finishing my 1275GT engine rebuild and a question arise me about the running in. I installed brand new AE 21251 +.020 pistons on a rebored engine block. On some web i readed that for the running in you must use a plain oil (oil without additives) because if you use a additivated oil the rings will not fit correctly in the bores.

What do you think about that?
Where could i get this running in oil?

Thank you in advance.

Just use a straight 20W/50 oil. I use Duckham's Q 20W/50 oil. Works very well for me.

AC

[locky7101]

yh i've had a lot of people say use plain oil, but thanks for that taffy, i may have to investigate this millers oil as i've only been able to find the penrite stuff atm. i'm guessing it should be adequate as it is a running in oil. cheers

[Scallywag630]

I was selling Minis new 40 years ago and brand new (not run in) and they all had 20w/50 in them on the pre delivery inspection.

[yorkshirechris]

Halfrauds do 20W50 Classic Car Oil (mineral) in an old school 5L tin with a picture of a mini on the front, for £16.99 (or £13.99 with a trade card ), that's what I've always had recommended and never had a problem with.

[samsfern]

im going to say 20/50, thats what i use, used it when i built my new 1330, no problems, change the oil every 2500 miles and use 20/50 castrol, i wouldnt dream of using semi or fully synthetic. Most, if not all classic cars use 20/50.

20/50s fine, just let it warm up for about a minute when you start it from cold, otherwise youll do harm to your engine in the long run.

[Cooperman]

For running in and for normal road use Castrol 20w50 is fine.
For competition use there is Valvoline Racing 20w50, Kendal 20w50 (the best there is, but you can't get it easily now and it costs a fortune - about £40 per gallon) or Penrite 20w50.
A thinner oil does the gearbox no favours at all.

[sheddd]

well i used 20w50 and it smells rather yummy haha.

halfrods stuff is green too, looks rather mint (no pun inteded)

[Darkscamp]

Strange that the oil i tend to use hasnt been stated.

I use 15W40 mineral oil for general running and cheap 20W50 for running in.

I was told to use this setup by our local mini garage, and the guy working there used to build engines for BMC. He says that 10W40 is just too thin to protect enough and 20W50 is too thick for everyday running as the engine will need to work harder.

[samsfern]

theres your answer, 20/50 mineral is the one to go for!

[taffy1967]

Strange that the oil i tend to use hasnt been stated.

I use 15W40 mineral oil for general running and cheap 20W50 for running in.

I was told to use this setup by our local mini garage, and the guy working there used to build engines for BMC. He says that 10W40 is just too thin to protect enough and 20W50 is too thick for everyday running as the engine will need to work harder.

The engine won't have to work harder with 20W/50, because the blender effect of the gearbox gives it a hammering before the engine sees it.

Each to their own though.