quote:
Originally posted by Jeepster_nut:
I switched to Havoline from M1. Now I notice the motor isn't as smooth at highway speeds (80mph).It also seems that it doesn't rev up to 80mph as quickly. Is this my imagination or can the switch from M1 to dino really do this? From what I've read on here, havoline is a good 5w20 wt. oil (which is why I used it). The car is an '04 Civic LX non Vtec.
I think you need to get a tad more precise in YOUR situation to really see if it makes sense to stay/go/switch to the different options in the 5w20 oils. Using a 04 Civic VP, here are some results.
Overall picture, the range of mpg has been 35-41 mpg in 27,000 miles.
I have had a 50 mile R/T commute, and since a job change have a 54 mile R/T commute. The commute average mpg in 10,000 miles with 5w20 conventional oil was between 35/36 mpg. The range with Mobil One 0w20 has been 37/39 mpg, again in 10,000 miles.
So one real question/calculation for me: is the lower cost of conventional oil and higher gas usage worth the higher cost of synthetic oil and lower fuel usage?
Given the figures,here's the math:
Conventional
3.4 qts @ 1 per =3.40 + 2.07 filter= 5.47
per 10,000 mile OCI
Synthetic
3.4 qts @ 4 per =13.60 + 2.07 filter= 15.77
per 10,000 mile OCI
Needless to say conventional oil is CLEARLY cheaper.
My average mph saved is 2. So 10,000/ 35/37 mpg= 286 gal/270 gal, minus = 16 gal SAVED x 2.70 current price of unleaded reg= 43.20
So if you add 5.47 + 43.20 average fuel savings=
48.60 vs 15.77.
(32.83 saved, or over the course of 250,000 miles 820.75)
Your call!
[ April 12, 2006, 04:36 PM: Message edited by: ruking77 ]