I just put the new mobile 15,000 syntech oil in the DTS plus some Lucas oil...so far it is rrunning like a gem... Mobile say's this oil should last for 15,000 miles I paid 6 dollars per bottle I want to see if it works.... any thoughts? :dj:
MrEvil said:I just put the new mobile 15,000 syntech oil in the DTS plus some Lucas oil...so far it is rrunning like a gem... Mobile say's this oil should last for 15,000 miles I paid 6 dollars per bottle I want to see if it works.... any thoughts? :dj:
MAC1 said:According to a Cadillac engineer who goes by the name bbobynski, synthetic oil does not offer any more advantages than conventional oil except under extreme cold or heat conditions. Today's additive packages in conventional oil will protect your engine just as well and without the expense. Moreover, Northstar engines burn oil, at least mine does, and I would not want to buy additional $6 per quart oil to replace the typical 2-3 quart replacement over 5-6,000 miles. Further, synthetic oil will tend to burn faster than conventional oil. Thus, you may find that you need to refill more often. Also, your Cadillac’s Oil Life Indicator will likely prompt you to change the oil in less than 15,000. It is recommended that you change according to the indicator as is uses a sophisticate algorithm to detect when oil should be change. However, it could be that the algorithm is geared towards conventional oil. You may want to contact Cadillac and ask what they think about Mobile1 and the Oil Life Indicator. Regarding oil filters, I checked Mobil1's Web site and it states that using an oil filter for 15,000 miles is fine. That's news to me as to my recollection filter manufacturers such as Purolator (if I remember correctly) gives a maximum of 6,000 miles on its filters.
Sorry to be negative here, but from everything that I have read regarding synthetic oil I don’t know of any reason why I should spend the money if there is no benefit. Sure, Mobil uses a lot of hype about how wonderful it’s new and improved oil is, but that’s marketing. Show me proof and a cost/benefit ratio that says Mobil1 is worth it and I’ll change my opinion.
Quik LS said:FYI - most highend manufacturers (BMW, Merc, Porshe, Lincoln) all use fully synthetic oil now - come right from the factory that way.
I am shock anyone would disagree with the merits of using synthetic oil nowadays - it not some new trend, it's been proven for a while.
Now the benefits of a 15,000 mile oil.... not sure if you have to change the filter every 5,000 still or not.
codewize said:I would also like to see any data proving something different.
MAC1 said:Call them up and find out. I doubt that you will get the truth, but you could try.
Just because Corvette, Mercedes, etc. uses synthetic doesn't make it superior. Again, it could simply be a marketing tactic with Mobile to encourage use of its synthetic oil. Could you imagine if everyone started using synthetic oil how much money Mobile and other synthetic manufacturers would stand to gain.
MrEvil said:I just put the new mobile 15,000 syntech oil in the DTS plus some Lucas oil...so far it is rrunning like a gem... Mobile say's this oil should last for 15,000 miles I paid 6 dollars per bottle I want to see if it works.... any thoughts? :dj:
steve said:I use mobil one but still change my oil every 5000 miles.QUOTE]
Steve - why do you use Mobil 1?
MAC1 said:Quik LS,
I have already stipulated that synthetics have better cold and heat characteristics. However, from a practical standpoint these superior characteristics, however slight, do not convince me that synthetics are overall superior when it comes to protecting engines from wear and tear. You can provide 1,000 links to studies and information showing that synthetics have certain superior characteristics, however, what are the practical applications. As the Consumer Reports study shows, synthetics do not better protect engines from wear than conventional oils regardless of certain superior characteristics. Therefore, what are the practical benefits of using synthetic oil? Considering the clearly superior cost of synthetic certainly that extra cost should equate to less engine repairs. In fact, to the contrary the Consumer Reports study showed that synthetics did not provide better wear protection. So, again, there is no favorable cost/benefit ratio to using synthetic oil.