Currently I have an '07 Sonata 2.4L with 102k on it and an '03 Sequoia with 4.7L with 98K. Both vehicles have been on M1, PP and PU since about 3k miles of life. OCI's are at about 7500, filters have been Factory or PureOne. Currently neither burns or leaks oil. Both have had multiple UOA's that were very good. The Sonata shows some slightly higher iron and other metal than "average" from real early which according to Blackstone is probably from higher RPM's (It's a stick shift for a reason
). The oils from both always come out dark brown (not black but obviously not new). No valve covers have been pulled. I really haven't checked in Sequoia as the fill has a tube that sticks up 4" to see inside. On the Sonata when I looked yesterday in fill port the aluminum looks brand new, no staining etc. I'll try to get a pic one day soon. Neither of these vehicles has had any flushes done. Both have seen some BG44k in the tanks. Mileage is as it was brand new if not slightly better.
My past experience was on my '93 Corolla (also stick shift). It used to get 3k oil changes with dino QS and fram filters until I learned better. I had done maybe every 18 months one of the Gunk pour in, run 20 min,drain flushes. Oil stayed clean for long intervals after change and again always med/dark brown. At around 100k it started burning 1qt/1k and I just topped it every fill up for the next 70k doing same oil change regimen . Somebody then recommended the old ARX so I tried it. It did create the oil seeping no leaks that resealed after. Oil usage went to 1/4qt/every 1k and stayed that way until car was totaled at 220k (but running perfect). After the ARX I started using M1/PP in it and factory filters. When I junked the car I yanked valve cover off and saw a bunch of staining but almost zero gunk anywhere so was happy with results of at least it's final life. When totaled it was getting 41mpg highway on trips, 30+ under "normal" (read sees 5500+ rpm a lot in lower gears).
Back to Sonata and Sequoia, I want to try and avoid the stuck oil rings so just like BG44k (or Kreen/GO AIO/Regane see other thread), I want to try some preventative measures and maybe do some cleanings to soften up any carbon deposits.
The Corolla I'm sure also saw some MMO in oil and Tank over the years and MANY techrons that I don't think did anything compared to BG44k. Artems Camry thread seeing his was mostly M1's has me a little concerned as that's what the Sequoia saw most. PP is probably most of what both cars have seen for last 6 years with some M1 and PU used when it was on sale. The PP had more sales at walmart otherwise it would have been M1.
Sequoia is currently doing about 1 OCI/year at 7500, Sonata 2-3 OCI/year also at 7500.
Advice/suggestions welcomed and appreciated, not looking to mail order (except maybe Kreen) so need to be available local. The TC-W3 threads are another whole direction I might be interested in. Does it need to be Pennzoil or will the Supertech make it?
My past experience was on my '93 Corolla (also stick shift). It used to get 3k oil changes with dino QS and fram filters until I learned better. I had done maybe every 18 months one of the Gunk pour in, run 20 min,drain flushes. Oil stayed clean for long intervals after change and again always med/dark brown. At around 100k it started burning 1qt/1k and I just topped it every fill up for the next 70k doing same oil change regimen . Somebody then recommended the old ARX so I tried it. It did create the oil seeping no leaks that resealed after. Oil usage went to 1/4qt/every 1k and stayed that way until car was totaled at 220k (but running perfect). After the ARX I started using M1/PP in it and factory filters. When I junked the car I yanked valve cover off and saw a bunch of staining but almost zero gunk anywhere so was happy with results of at least it's final life. When totaled it was getting 41mpg highway on trips, 30+ under "normal" (read sees 5500+ rpm a lot in lower gears).
Back to Sonata and Sequoia, I want to try and avoid the stuck oil rings so just like BG44k (or Kreen/GO AIO/Regane see other thread), I want to try some preventative measures and maybe do some cleanings to soften up any carbon deposits.
The Corolla I'm sure also saw some MMO in oil and Tank over the years and MANY techrons that I don't think did anything compared to BG44k. Artems Camry thread seeing his was mostly M1's has me a little concerned as that's what the Sequoia saw most. PP is probably most of what both cars have seen for last 6 years with some M1 and PU used when it was on sale. The PP had more sales at walmart otherwise it would have been M1.
Sequoia is currently doing about 1 OCI/year at 7500, Sonata 2-3 OCI/year also at 7500.
Advice/suggestions welcomed and appreciated, not looking to mail order (except maybe Kreen) so need to be available local. The TC-W3 threads are another whole direction I might be interested in. Does it need to be Pennzoil or will the Supertech make it?