Oil cap left off - damage?

Oil cap left off - damage?

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Lord E38

Original Poster:

74 posts

48 months

Some idiot (me) left the oil cap off this morning before going to the petrol station. As I pulled back into the drive I noticed smoke coming from the engine. I opened the bonnet and guess what... oil all over the head and the bonnet insulation.

I have a 2 hour drive this evening - will it be okay just with a wipe down? The level never went below the minimum and the cap was off for 25 minutes at the most. I wasn't driving like a madman (too bloody hot)

Car is a buggered old Volvo.

Pebbles167

4,113 posts

167 months

In my experience it'll be fine. I've done the same.

Someone may have something more scientific to add, but as long as the level is okay I wouldn't worry.

DaveCWK

2,179 posts

189 months

I'm sure it will be fine

LennyM1984

874 posts

83 months

Lord E38 said:
Some idiot (me) left the oil cap off this morning before going to the petrol station. As I pulled back into the drive I noticed smoke coming from the engine. I opened the bonnet and guess what... oil all over the head and the bonnet insulation.

I have a 2 hour drive this evening - will it be okay just with a wipe down? The level never went below the minimum and the cap was off for 25 minutes at the most. I wasn't driving like a madman (too bloody hot)

Car is a buggered old Volvo.
I did a 20 minute race with the oil cap missing from my car (the smoke only became apparent as we were doing the parade lap at the end). It took me bloody ages to clean up all the oil (air flow had spread it everywhere from the engine all the way back to the diffuser). That was 2 years ago and the car has done many races since without issue.

(If it helps explaining the mess to wife/friends, I claimed that the oil cap had been blown off by excess pressure in the engine! Reality was, I had been topping it up in the paddock and had clearly forgotten to put it back on)

sanguinary

1,453 posts

226 months

You'll have to ignore the oil burning smell for the next few miles though!

renmure

4,653 posts

239 months

I also did the same without any dire consequences. Had the engine steam cleaned locally which came up fab and it almost felt like a win.

NotDan

15 posts

42 months

Driving to mongolia, we met a group of 8 pulled over at the side of the ‘road’ somewhere in the Kazakh desert with the bonnet up and oil cap missing from their Prius.

We topped them up, cable tied a silicon glove over the top and sent them on their way - you’ll be fine (if a little smelly for a few miles)!


spikeyhead

18,828 posts

212 months

It's probably fine, but check the air filter