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Oil Question
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James(Ga)    Posted 02-28-2005 at 17:56:11       [Reply]  [No Email]

I have always used valvoline 10-30 in both Jennys van and my truck,there are about 121000 on both vihicles, my truck uses about 1 qt between changes and jennys van about 2, i change them both the same day at 3-4 thousand miles,would you stay the same or switch to 20-50, Thanks again as i value your opinions. James

Polish Mike    Posted 03-01-2005 at 08:51:10       [Reply]  [Send Email]
Since you're burning a quart or two between oil changes, it wouldn't hurt to move to something like Shell Rotella 15w-40...Just a bit thicker than what you're using. 20w-50 at this time of year is overkill. And, by the way, a quart between changes with that kind of mileage on those vehicles is really nothing to worry about.

toolman    Posted 02-28-2005 at 18:03:46       [Reply]  [No Email]
james i don,t know what year they are but if a newer vehicle i would stay with what the manufacture tells you in their handbook, using heavy oil isn,t really a good idea as it is thicker and doesn,t get to where it is suppose to as fast as the thinner stuff, thus you get more wear on moving parts.synithic oils are suppose to be good to allow heavier use and longer use between changes but is more expensive and there is also some questions about using it and your seals in higher mileage engines, if bob ont . is around he would be a good one for advice on something like this.

big fred    Posted 02-28-2005 at 20:22:48       [Reply]  [No Email]
As I recall from my bearing design class in college (never really used it, as I have worked in electronics all my professional life) a bearing's clearances are designed with a specific combination of viscosity, pressure and flow, and I don't think I'd screw with it. We ran my wife's Dodge Stratus 226,000 miles on 5W-30, changed every 3,000 miles, and when the tranny finally gave out, the engine was still running strong. By the way, I change every 3,000 miles regardless, even when it meant changing oil 3 times in one month a couple years back.

toolman    Posted 02-28-2005 at 20:30:59       [Reply]  [No Email]
yup i don,t think there is much more important for your engine than changing the oil, it,s cheap and easy and worth every penny compared to a rebuild.i run 10-30 in my truck last summer and now have noticed that i have a few leaks that i never had before too, i have 5 -30 in it this winter and thats what i.ll keep in it. my wife runs short trips to work every moring , just warms up the explorer and shuts it down same a noon and after work, i change the oil it that about 3 to 4 times a year, alway have done this and have had pretty good luck so far.

James(Ga)    Posted 02-28-2005 at 18:23:30       [Reply]  [No Email]

Toolman,maybe Bob will chime in later but they are 98 chevy 350 and 97 dodge 3.3 and the handbook says use 5-30 but i have always used 10-30,didnt even think about oil beening slow getting to the barrings, Thanks. James

toolman    Posted 02-28-2005 at 20:00:14       [Reply]  [No Email]
james i run 10 30 in everything for years but the newer ones calls for 5 -30 for a reason , they are built to run on that , i don,t think 10-30 would hurt especially in the hot weather but i would go higher like you wanted, you,ll start having top end noises and problems probably, and next thing you be buring more due to wear anyway,i have been using 10 -30 in my 350 chevy during the summer but i was worried about the oil pressure but after i checked what was showing was normal for my year, i,ll be keeping 5-3- in it all the time now i think.

Grove r    Posted 02-28-2005 at 18:21:37       [Reply]  [No Email]
Right on, Toolman...can't go wrong with manufacturers specs, and if under warrenty, don't use any additives, they can void the warrenty if something should go wrong with the motor. If in older vehicles, brand names are not much of an issue, due to the regulations and specs set down by the government. Hope this is of some good to you James......have a good one, R.E.L.

James(Ga)    Posted 02-28-2005 at 18:28:05       [Reply]  [No Email]

Thanks Grove r, i dont use additives of any kind on these but did in the others we had but learned a valuable lesson. James

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