Car comes from my dad, bought in 03 with 35k miles (Beretta in my sig). Was on a Halvoline and Chevron dino diet, with Purolator filters. OCI of 10k miles, possibly higher, with no time limits, FCI I believe 2x if not 3x the OCI. Used to loose oil BAD, stains in the garage are bad enough to think the oil was changed without a catch pan. Interestingly enough, I drove it a month, and now a couple drips IF THAT...don't care how, lucky me I guess. Current fill of Chevron Supreme SN 5w30, with a WIX from march of last year, with about 1500mi, 1k of which were put on in the recent couple months. I planned to drag it out 2-3years/ to 5-7K.
Today before work I figured pop off the valve cover and see how much damage dad's OCIs did. I did not expect it to be that clean. The dark areas on the picture are loose thin layers of sludge. More flaky, wipes easily. On the pic with rockers, under the far right one I wiped a spot with a rag, and not even varnish.
I think I will shorten the OCI to 3-4K, and put in some of my Edge A3/B4 to keep the crud from building up and continue 10-15k OCIs.
Today before work I figured pop off the valve cover and see how much damage dad's OCIs did. I did not expect it to be that clean. The dark areas on the picture are loose thin layers of sludge. More flaky, wipes easily. On the pic with rockers, under the far right one I wiped a spot with a rag, and not even varnish.
I think I will shorten the OCI to 3-4K, and put in some of my Edge A3/B4 to keep the crud from building up and continue 10-15k OCIs.