darren m Posted June 25, 2014 Report Share Posted June 25, 2014 heres another question anyone ever used wynns stop leak or similar for engine oil leaks , thinking rear crank seal may have gone Quote Link to comment Share on other sites More sharing options...
foxy bingo Posted June 25, 2014 Report Share Posted June 25, 2014 yes very good but it depends how bad the leak is Quote Link to comment Share on other sites More sharing options...
LowStandards Posted June 25, 2014 Report Share Posted June 25, 2014 (edited) Its dire stuff, works by swelling the seal (and all the other good seals), fine I guess if your selling the car and don't give a **** about the poor sod who buys it. Better off buying a new seal and fitting it, should only be a few quid and a days work Edited June 25, 2014 by LowStandards Quote Link to comment Share on other sites More sharing options...
drut Posted June 25, 2014 Report Share Posted June 25, 2014 Works well on slight leaks & is a lasting repair in my experience. Quote Link to comment Share on other sites More sharing options...
darren m Posted June 26, 2014 Author Report Share Posted June 26, 2014 well whats the going rate for replaceing a rear crank seal Quote Link to comment Share on other sites More sharing options...
hoggysreels Posted June 26, 2014 Report Share Posted June 26, 2014 (edited) Worth a go ... if it works, it usually lasts 12/18 months'ish Edited June 26, 2014 by hoggysreels Quote Link to comment Share on other sites More sharing options...
darren m Posted June 27, 2014 Author Report Share Posted June 27, 2014 Worth a go ... if it works, it usually lasts 12/18 months'ish have you used mate Works well on slight leaks & is a lasting repair in my experience. Drut - what did you use it in Quote Link to comment Share on other sites More sharing options...
Daveo26 Posted June 27, 2014 Report Share Posted June 27, 2014 It's a bodge, if you were stuck 500 miles from home I'd say do it but you will have to repair it sooner or later or sell it. As mentioned it softens and swells seals, all seals. Probably reducing their working life Quote Link to comment Share on other sites More sharing options...
hoggysreels Posted June 27, 2014 Report Share Posted June 27, 2014 Yes, on occasions ... some times worked okay. Works better on PTFE type seals. Worth a dabble. Not a lot to loose .. cheers Quote Link to comment Share on other sites More sharing options...
LowStandards Posted June 27, 2014 Report Share Posted June 27, 2014 There's loads to lose, there's replacing a ten quid seal or doing a full engine overhaul when it destroys all of them Always ask yourself before you put anything in an engine, - "why isn't it in there from manufacture" Quote Link to comment Share on other sites More sharing options...
hoggysreels Posted June 27, 2014 Report Share Posted June 27, 2014 For a start, it doesnt swell the seal ... it doesnt work on that principle .. Quote Link to comment Share on other sites More sharing options...
LowStandards Posted June 27, 2014 Report Share Posted June 27, 2014 Well yes, yes it does Its a chemical compound that does exactly that. By all means use it, I don't care, I won't be buying a vehicle off you. The seal will cost the same as the "stop leak" and take a day to fix... Quote Link to comment Share on other sites More sharing options...
drut Posted June 27, 2014 Report Share Posted June 27, 2014 " Drut - what did you use it in" 40 + years motor trade(had my own small workshop & MOT station until I retired),used it in a wide selection of older cars.Good results on everything from weeping crank seals to valve stem oil seals.However as I pointed out to customers,although,for the cost well worth trying there could be no guarantees:if a seal is nicked or damaged replacement is the only answer.Generally I found Wynn's & Forte additives effective although there are any number of ineffective "snake oil" additives out there. As an aside the thinner new synthetic oils commonly used are blamed by some for seal problems http://www.popularmechanics.com/cars/how-to/products/4213451 Quote Link to comment Share on other sites More sharing options...
darren m Posted June 28, 2014 Author Report Share Posted June 28, 2014 good link -- i use semi syn in this , but it was pretty thick stuff i took out ( previous owner said it was 15w 40 ) a bit sludgey in fact, i replaced it with GTX 10w 40 part syn ( as recommended ) it seemed a bit thinner and then oil leaks started . Quote Link to comment Share on other sites More sharing options...
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