I have this thing that I like to know my car is running well and I've done it on all my cars, I like to service my car in between garage servicing (for piece of mind) I just need to know the spefics of what I need for the Scooby for example

What oil to use (I've got an impreza sti with 350ish who)?

How much I will need to do a full engine flush? What oil is best for the diffs?

Etc...

Could anyone help me out please?

Thanks, Mike

i use millers 10 50 in mine , more expensive but ive learnt the hard way in the past in usuing cheap oils, i use a high grade cause mine are forged and run a little hotter due to the compression, with yours i would say 10 40 - or 10 50 speak to opie oils as the do a discount for the forum :) diffs ive left well alone and my mech does that lol

I second what Ash has said. Opie oils are a great company. Full of helpful advice. Really good priced and we get a discount.

Cheers, I've got in touch with opie oil I'll see what they say

Opie are fantastic,have used in past for for previous motor,great service(quick delivery) and good value too. See for any discounts or promotions too :)