tizer09

Hello is 5w 40 fully synthetic ok to use in my ej205 after fitting new crank and bigend bearings?

**jay**

iTrader: (1)

Would use a mineral oil mate, synthetic wont bed rings in properly.

RICHARD J

iTrader: (4)

Iv used mineral before, but Iv been told that a cheap 10/40 semi synthetic is best.

tizer09

Ok any recommendations on what to go for jay?

tizer09

Ok brill its just that i had 5 40 fully sinth that i bought for my rsturbo and never used it thanks for the info guys.

tizer09

Is it about 500 mile i do with this oil before changing?

wms-racing

If you have fitted new rings and de-glazed the bores then use mineral oil for 200-300 miles, this helps the rings to bed in, switch to semi 15/40 for around 1000 miles then a good fully synthetic. if you havn't changed the rings it doesnt really need running in, the bearings are such good clearances as std they don't need it.

**jay**

iTrader: (1)

500 should be fine then up to a semi synthetic for about another 500 then fully,

tizer09

I havent touched the rings or cylinders only done all the bearings so just go for normal oil then if the rings havent been touched? Dont no if this helps bud its acl duraglide main bearings and acl COMPETITION bigend bearings

**jay**

iTrader: (1)

Sorry never read it right, thought it was a full rebuild, should have done a hone and set of rings though while you were there lol

be fine with fully synth then but id still run some cheap semi through it for a few hundred miles.

tizer09

I was going to but their was no need as the block and pistons had hardly done any miles i just had to replace one of the pistons as the ringlands had broke up abit, luckly not touching the cylinder wall this was due to last owner not having the intake pipes connected properly and dogy wireing on air flow meter,i have had to replace one piston that came from a bigend bearing failure engine that had newish pistons haha so done the shells wile everything was apart.

oilman

iTrader: (9)

This is ideal for the running in period

http://www.opieoils.co.uk/p-60229-mi...ng-in-oil.aspx

Cheers

Tim