There was an issue with sump gaskets on those. I fitted one for a mate, having got hold of the relevant Service Bulletin. Due to the wanky way that Renault chuck cars together:The next year they tried to tell me my sump gasket was blown and it would be £200 for the part and £200 for labour. I looked under the car and gasket was fine. The oil was dripping from the drain nut. I twiddled it. It was not even finger-tight. I told the missus that they'd changed out the oil and the sump nut washer but left the nut loose to make it look like there was a leak. They'd also not noticed that one of the new plugs was duff as they'd test-driven it and pronounced it was fine. I picked it up, started it and noticed the misfire immediately. They then tried to tell me I had to pay £200 diagnostic fee (even though I'd diagnosed it already) and £50 for the new plug. I set them straight on that one sharpish...
Monday morning herself was in the office armed with my signed statement and had opened a file before her first coffee was drained. About three months later, after a probe by TS, they went down. The site shortly thereafter was redeveloped into a block of warden-monitored OAP flats.
I wish I'd stuck with her, or at least stayed friends afterwards, as she's clearly useful to know.
1. Drain oil.
2. Manhandle sump from engine. A right palaver.
3. Clean sump.
4. Fit new gasket
And here's the best bit: in order not to mangle the new gaset on refitting, one had to CUT A BIT OFF THE SUMP with a hacksaw. Official, from Renault.
Or take the whole engine out from the top.