- Oct 24, 2002
- Louisville, KY
Where would one start to see a signifcant difference or any for that matter?
quote:All things being equal, yes. In other words, if you're comparing 5w30 and 10w30 of the same oil (say Pennzoil conventional oil), then the 5w30 will have better low temp flow properties. However, if you compare Mobil 1 10w30 to Pennzoil coventional 5w30, the Mobil 1 will have better low temperature flow properties. It's a "thicker" oil, but its pour point is significantly lower than Pennzoil's conventional 5w30.
Originally posted by kreativ: Isn't the whole point of 5w-30 that it's supposed to flow better than 10w-30 at low temps?
quote:If you go here you can select the conventional oil and compare your "apples to apples" http://dallnd6.dal.mobil.com/Apps/DS/_39gj50ko_/MobilPDS.nsf/Automotive?ReadForm&Start=1&Count=30&Expand=4
Originally posted by RobZ71LM7: Thanks for the info. I know synthetics will flow better than conventionals but I'd like to compare apples to apples. I'm trying to decide at what temp it's best to switch to 5w30 in conventionals and synthetics. I'm wondering where it is that the stability of 10w30 starts getting outweighed by 5w30's superior flow. Jay-thanks I'll be sure and request that pdf.