From: techman41973 on 28 Dec 2009 05:05 Are there any real quality differences between oil brands in the bottle (conventional not synthetic)? Is there any real quality differences between bottled oil and the bulk oil places like Jiffy Lube use? Thanks
From: jim on 28 Dec 2009 08:24 techman41973 wrote: > > Are there any real quality differences between oil brands in the > bottle (conventional not synthetic)? > Is there any real quality differences between bottled oil and the > bulk oil places like Jiffy Lube use? > Thanks You haven't defined what you mean by quality. For example if you think quality means reducing engine wear, there is very little difference that can be measured between brands of oil when it is fresh and clean. If you had a hundred cars that were all identical and driven identically the same but used different brands of oil. Then if you were also inclined to change oil on these vehicles every 3000 miles, it is extremely unlikely you would ever be be able to determine a correlation between oil brand and engine wear. If instead you changed the oil every 6000 miles you still probably won't be able to see any differences between most of the brands in wear based on which oil was used. At that maintenance level level you might find one brand where the vehicles using that brand had slightly more wear than the others (after many many miles). If instead you changed the oil every 12000 miles on your 100 identical vehicles after many miles you would probably be able to see some real differences in the correlation of engine wear to oil brand. So buy a hundred cars and hire a 100 trained drivers and follow regimen number 3 and in a few years you can come back and tell us what brand provides the best wear protection. -jim
From: Kruse on 28 Dec 2009 08:43 On Dec 28, 4:05 am, techman41973 <techman41...(a)yahoo.com> wrote: > Are there any real quality differences between oil brands in the > bottle (conventional not synthetic)? > Is there any real quality differences between bottled oil and the > bulk oil places like Jiffy Lube use? > Thanks There is differences between oil brands. But if you change your oil regularly and at a maintained schedule, your car will easily make it to 250K, even if you use a quikie lube with bulk oil. Same with filters. There is a more noticeable difference here between your premium and economy filters. But once again, a regular maintenance schedule will have your car wear out before your engine, even if you use a Fram.
From: hls on 28 Dec 2009 09:19 "techman41973" <techman41973(a)yahoo.com> wrote in message news:31b79c0f-d2cc-45f5-92ea-bd6959f71e85(a)22g2000yqr.googlegroups.com... > Are there any real quality differences between oil brands in the > bottle (conventional not synthetic)? > Is there any real quality differences between bottled oil and the > bulk oil places like Jiffy Lube use? > Thanks Bulk oil and packaged oil are the same. It is just a heck of a lot cheaper to buy oil in bulk than in the smaller packages. There are differences between different brands and variants of oil. Largely the additives packages may be different and present at different concentrations. Most of us have a preference for a particular oil, based on personal observations or on advertised qualities. Not very accurate methods, often, for selecting the best product.
From: Don Stauffer on 28 Dec 2009 10:13 techman41973 wrote: > Are there any real quality differences between oil brands in the > bottle (conventional not synthetic)? > Is there any real quality differences between bottled oil and the > bulk oil places like Jiffy Lube use? > Thanks All motor oils must pass tests by SAE and a few other agencies. So they meet certain standards. Yet they may be different. Any number of additives can meet performance specs. While most oils can be used in any engine as long as it meets viscosity and service grade requirements, occasionally there is an engine that doesn't like one brand as well as others. This is getting to be much rarer today, however.
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