
Originally Posted by
Peter B - CV8
I've used the Penrite semi syn 10/40 in my LS1 in my 2004 Monaro practically since new - it now has 105,00- k's on it (so not really high mileage). I've never heard/had any lifter noise. I do an oil & filter change every 5,000 k's (basically annually) & every second change ie every 10,000 k's, I run some Repco engine flush through it for 10 mins before dropping the oil. Just before the 100,000 service last year, I used the Nulon "Lifter Free/Tune Up" ?? - just in case there were any hard deposits etc that might have built up over the years. I did about 1,000 k's travel (mainly city driving) & then dumped the oil - which came out a fraction darker than normal (at least I thought so). Engine is as quiet as a mouse at start up & when hot.