Audi A5 Forum & Audi S5 Forum banner

S5 B9 3.0 Dipstick.

1832 Views 5 Replies 5 Participants Last post by  Dave Kwatro
Can a dipstick be fitted to the S5 B9? I've search but cannot find any.

My car has started telling me the oil level is too high. It had an oil service about 3 months ago. I have checked the oil filler cap and there is a small amount of mayo there. I'm hoping that is from my short 4 mile commutes in winter causing a bit of condensation - the oil temp doesn't even register a value as it's so short. The coolant is still at max so isn't loosing any. I'd like to easily check the oil lower down to make sure it's just condensation and not anything more serious.

Also, is it normal for these engines to blow air from the filler cap and rev up if I try to remove it while the engine is running? I'm guessing this is something to do with positive crankcase ventilation? If not, I'm screwed!

Car Vehicle Automotive lighting Hood Steering part
See less See more
  • Like
Reactions: 1
1 - 6 of 6 Posts
It seems you can fit a dipstick. I’d be tempted to do another oil change just to see what state the oil is in.
It seems you can fit a dipstick. I’d be tempted to do another oil change just to see what state the oil is in.
Thanks, I'll look in to getting one of those.
When I had my A5 3200 V6 I had no dipstick and when I ordered one from an Audi dealer he told that it cannot be fitted. So I insisted and it indeed fitted and works perfectly!! I too would change the oil again so start from a clean sheet, so to speak.
That amount of mayo does look worrying!

Also positive crankcase pressure is actually a negative! Never figured that out! But if you try and remove the oil cap it should be held on by some suction. And yes the revs will go up and down, possibly a bit shakey with the oil cap removed whilst running.

Can you check with the garage that did the oil service? If the car has just started telling it has too much oil after 3 months, then something is 'adding' to the oil and that mayo could be part of the issue.
1 - 6 of 6 Posts
Top