Originally Posted by Patman
Originally Posted by irv
I recently, within a month or so, did an oil change on my son's new to him 2008 2.4Ltr Ecotec engine Malibu.
I used 5w30 Pennzoil Ultra Platinum in it and just checking his oil level today via the dipstick. I couldn't believe how dark it was getting already.
I know the previous owner, who kept all her receipts, used whatever oil the garage stocked as it says nothing about the kind/brand on those receipts.
My conclusion is, the garage likely used a cheaper bulk type oil rather than anything stellar so that is why it's turning dark so quick?
I was going to leave this oil in until next spring, but now, after seeing how dark it is getting in such a short period of time, I may just do another OC come this November?
I think it's a good idea to keep this first interval short and change it again in November, just because the Ultra Platinum could be doing a lot more cleaning on this first interval, and then you could probably run the second interval of Ultra all the way from November 2018 to November 2019.
I think that is what I am going to do, Patman. As far as running it until next November, well, that likely isn't going to happen but I guess that will be based on how many miles he puts on it between then?
His car, most likely, won't see a lot of, if any, hwy driving. I purchased this car for him to get him back and forth to school and other errands so most will be short city stop and go drives.
I will keep an eye on it and his OLM then decide but I think one more, after this upcoming winter is over, will be in order before I go annually.