Mine was worse

The only thing that kept my Saturn from excessive burning was this:
http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_Clean_7500.aspx but
alas I cant find this oil ANYWHERE after I tried it in my car.

Oddly enough it was about $3/art cheaper than Mobil 1 Synthetic - and its
synthetic itself. Bizarre? I think so!

 

No suprize, SYN is the last thing you want in a worn engine. Walmart
might carry it or Advanced Auto might have it or be able to get it for
you. You could just use Mobil 5000 miles oil too in 10w30 with likely
same results. 5w30 is not a wise choice SYN or conventional in a worn
engine.

 

Oddly mine seemed to have burnt through havoline 5W30 like mad compared to
the Mobile 1 High Mileage or Mobile 1 Syn. Any idea as why?

 

Ratings on conventional oil are misleading, especailly with 5w30. The
test the flow of them at ) and 200 degrees and it has to fall in a
certain range to pass ratings but oil gets a lot hotter than 200 in
piston ring area and oil things out more. They ad a viscosity modifier
to conventional oil called VI and 5w30 has a lot of it. It breaks
down wiyh higher temps and thins oil out further and increases
consumption (10-30w conv has less of it). SYN oil is more stabile at
higher temps and also has a higher volatility tempature so it does not
break down as quickly. SOme hang by 5w30 but that spec is for when
engine was new and tight and as it wears clearnces increase and a
10w30 oil will generaly play better. The high VI content in 5w30
conventional aslo cooks out in rings causing them to stick and seal
less which increase consumption too (Saturns are bad about this).
10w30 conventional has less VI and is less prone to gum up rings.
Things are not always as cut and dried as they seem and conventional
oil 5w30 is not the same at 250 degrees as 10w30 is. SYN oil does not
depend on VI persay to control its viscosity.