Rudders1 Posted June 23, 2023 Report Share Posted June 23, 2023 Hi all, I'm after a bit of advice, I've just removed my Herald 1296 rocker cover and there seems to be quite a bit of oil sludge around, is it better just to change the oil and leave alone or do i put an engine flush in, what's the best thing to do. Advice required thanks Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 23, 2023 Report Share Posted June 23, 2023 hair cream in the coolrocker zone is normal from short drives and poor weather give it a wipe and refill will be fine you get less with an alloy cover as the heat soak is better the tin cover gets cooled by the fan draft an sludge ,cream starts to accumulate in the cold zones old idea was remove fan or fit a baffle in front of the RC or lag the cover all these can help its quite normal whatever oil you use , Pete Link to comment Share on other sites More sharing options...
Nigel Clark Posted June 23, 2023 Report Share Posted June 23, 2023 What kind of sludge are we talking about? Mayonnaise-like emulsified oil and condensation, or black tarry oil sludge. As Pete says, the mayonnaise comes from too many short runs when the engine doesn't warm up fully. Occasionally a head gasket failure will cause mayo in the engine, when coolant meets oil. Tarry black oil sludge is the result of neglect, oil changes missed. The action you need to take depends on the type of sludge. Nigel Link to comment Share on other sites More sharing options...
Rudders1 Posted June 23, 2023 Author Report Share Posted June 23, 2023 black tarry oil sludge, I've only just purchased the car. Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 23, 2023 Report Share Posted June 23, 2023 aha yes i would agree with Nigel thats lack of servicing im not a fan of flushing oils can dislodge firmly stuck old sludge certainly a good quality oil change needs to planned and give the car a good long hot run drain out and refill again Pete Link to comment Share on other sites More sharing options...
Nigel Clark Posted June 24, 2023 Report Share Posted June 24, 2023 14 hours ago, Rudders1 said: black tarry oil sludge, I've only just purchased the car. I would give the car an oil and filter change immediately, drive it, and after a few hundred miles change the oil and filter again. Use a good quality classic 20W50 oil. Two oil changes in quick succession should help to clean the inside of the engine, and much less aggressive than flushing. Nigel Link to comment Share on other sites More sharing options...
johny Posted June 24, 2023 Report Share Posted June 24, 2023 I would do the same but with the cheapest supermarket 10/40 oil you can find. I wouldnt recommend any sustained high speed runs but when its black change it... Link to comment Share on other sites More sharing options...
dougbgt6 Posted June 24, 2023 Report Share Posted June 24, 2023 Being a cheap wad I use cheaper oil first then the good stuff. Halfords sell a 20/50, (looks like Duckham's, smells like Duckham's) and they also a have a good offer on Millers (the good stuff) Doug Link to comment Share on other sites More sharing options...
Colin Lindsay Posted June 24, 2023 Report Share Posted June 24, 2023 2 hours ago, johny said: I would do the same but with the cheapest supermarket 10/40 oil you can find. I wouldnt recommend any sustained high speed runs but when its black change it... +1 for that, in fact the guy behind the counter commented that "I didn't like my car much' when I bought some really nasty stuff for £1. The trick is to use it to wash all the nasties out of the engine, then drain it before it does any damage. Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 24, 2023 Report Share Posted June 24, 2023 (edited) go back too many years and a fill with a high concentrate of paraffin was commonly used any flushing can cause more trouble if it shifts well stuck crap to start it floating around the Lube system and you make more troubles a simple flush and refill with something half decent will work Ok maybe up the oil change frequency for a season or two and on going Italian Tune up , keep it hot and revy no slow plodding cold runs. pete Edited June 24, 2023 by Pete Lewis Link to comment Share on other sites More sharing options...
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