|07-09-2013 09:32 PM|
'Low viscosity (5W20 for the Dtec) oils are much better at getting lubrication to the critical areas during cold starts.'
So they would have you believe. One should consider that the thicker oil will not drop back out of passages as fast as the thinner one will, or capillary action, which works better with thicker oil. If the oil is still in the critical area then no need to get it there faster.
Biggest problem I've personally seen is start up rattle using thinner oils, I have cured problems like that by going to a thicker oil. Try explaining that one away..........
'Reactive maintenance methods are seldom wise for complex equipment, systems or living beings.'
Could not more heartily disagree. 'Reactive' thinking often cures so many problems one cannot count. ALL vehicle recall actions are reactive, as well as any action taken by a manufacturer to cure perceived problems in the field. Any modification to a factory service manual based on real world previous result would be reactive as well. Are we saying here those actions are bad?
Reactive thinking can be strong evidence of thinking in the best interest of oneself. The alternative is simply falling into the ranks with the rest of the lemmings. Or, controlled thought. Sorry, you can have my portion of that.
|07-09-2013 09:23 PM|
Ford recommends 7500Mile OCI for my 2011 Focus using oil that meets a certain spec. There are numerous conventional oils that meet the spec, along with numerous synthetics.
Ford's Motorcraft oil is a really good synthetic blend and can be had for a great price.
|07-09-2013 08:44 PM|
|sanford12||I buy what ever full syn oil is on sale then run it for 10,000 miles. With a filter change and and a oil top up at 6000 miles.|
|07-09-2013 08:12 PM|
95% of engine wear occurs at start-up. Low viscosity (5W20 for the Dtec) oils are much better at getting lubrication to the critical areas during cold starts. Low viscosity synthetic oils and blends do not break down at higher temps like low viscosity conventional oils.
Your engine was designed to run on Motorcraft Synthetic Blend. I put 160K on a Dtec with the MC oil and 5K oil changes with absolutely no problems. The synthetic blends are a little cheaper than the full syn but if you want to run longer oil changes I would go to the full syn.
|07-09-2013 06:01 PM|
1) lady who drives 2 miles to bingo each day, parking outdoors in Anchorage, Alaska.
2) car that uses a qt of oil every 1K mi due to marginal ring seal.
3) guy who runs the cheapest oil available that meets specs.
Even in this extreme case, the mfr is conservatively basing their recommendations on many thousands or even millions of vehicles throughout the world after examining consumer surveys, actual failure rates discovered in factory shops and analyzing modes of failure. This is hardly a thin air or coin flip approach. They offer sound advice that can only be duplicated by an owner willing to do destructive testing on their own hardware. No thanks, I'll let other consumers handle that, thank you lol. The recommended oil change intervals will not break the bank.
Reactive maintenance methods are seldom wise for complex equipment, systems or living beings. That would be more appropriate for light bulbs, fuses or maybe haircuts. This is how some people get terminal cancer that can't be cured. Go to the doctor on a regular basis for preventive care and testing, instead of waiting for sweating, pain and scary lumps to appear. Don't quit sleeping, eating well or getting exercise then see how long you can avoid the doctor's office.
|06-17-2013 09:28 PM|
No surprise there eh?
Uh, the guidelines for oil change intervals are more likely to be found in the maintenance schedules rather than owner's manuals. Owners only shows HOW to change it not WHEN......................
|06-17-2013 09:58 AM|
Your best bet is to follow the guidelines for oil changes as outlined in your Owner's Manual. You can download a free copy of your manual here: http://owner.ford.com. Additionally, you can download coupons for service and schedule future maintenance appointments. If you have any questions, give the service manager at your local Ford dealership a call; they'll be happy to help out.
|06-17-2013 08:04 AM|
|KCaudill||I have a 06 ZX3 bought brand new off the lot. The car has ~212k miles todate. I have been running Royal Purple since the car was 20K miles old, Between 20K and 80K miles I did the Used Oil Testing to determine oil change intervals. The results show that with my driving habbits, 99% freeway at ~75mph, that I can change my oil at 10K with out any oil degradation. I say go Synthetic. but also stay synthetic.|
|06-17-2013 12:56 AM|
Maybe one should look at how some of those factory recommended intervals have changed through the years...........While I wouldn't pay for analysis either, you can use others doing so to modify your own thoughts on the subject. There is really no reason to go 3000 mile OCI either, except personal feeling.
'Modern synthetics will last well beyond mfr recommended intervals even when seeing the most extreme taxi or police severe duty use.'
If that is actually true then in and of itself lays waste to the factory service recommendations to a certain extent. Or, not best evidence.
'Spending $50 for an oil sampling analysis (trying to extend intervals) is totally stupid.........'
I hope that doesn't mean the factory thinks the same way and just picked the intervals out of thin air without research............
Many actions in life are reactive, that does not automatically make them necessarily bad approaches.
|06-17-2013 12:40 AM|
|felixthecat||To the op, I use Mobil 1 w/ a desent filter.|
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