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#1 of 428 Honda and Ford have introduced engines that call for
Dec 20, 2002 (9:04 pm)
5W-20 grade oil, and Mobil 1 has a synthetic 0W-20 on the way in March 2003. Some say 5W-20 is too thin to protect the engine, and that the manufacturers are recommending it because it improves gas mileage slightly. On the other hand, I have heard the opinion that the thinner oil gets into the cylinders of these engines faster and better than a heavier grade would, and Ford says it will void the warranty if you use a grade other than 5W-20 when this grade is called for. What are your opinions?
#2 of 428 If you don't trust the owners manual...
Dec 20, 2002 (9:51 pm)
...then who do you trust? You go to the manuf. owners manual for everything from ATF to proper gas to use. Heck I remember a few years back when people were saying that the newly recommended 10w30 was way too thin and to use only 20w50. People really said that in the 80's. The best advice is follow your owners manual.
#3 of 428 Scares me too...
Dec 21, 2002 (6:58 am)
Just seems like putting oily water in the engine.
But I reccomend to my customers that they follow Honda's reccomendations. I'm sure they know what they are doing!
#4 of 428 The engine sounds different when using 5W-20.
Dec 21, 2002 (9:01 am)
When I did my first oil change, I went to a quick change place that put in 10W-30. I noticed the engine sounded like it ran smoother. Then I saw that the engine called for 5W-20, so I took it to the dealer and got the oil changed to 5W-20. I swear the engine sounds different now, louder, grindier... almost like when my oil would get thin when I would go too long between oil changes on my old Honda. That is a bit distressing...
#5 of 428 edwardn1: Trusting the owner's manual Maintenance
Dec 21, 2002 (9:18 am)
Specifications section cost me over 11 hundred dollars. It stated you don't have to check the rear axle lubricant until 100,000 miles. Before 100,000 miles the whine began and the Ford Service Manager said the fluid had turned to foam.
The owners manual is now regarded as just a guide, not a bible. After confronting a Ford Customer Service Rep I received 50% of my cost as their "goodwill" gesture.
Dec 21, 2002 (9:42 am)
I have been advised by a source that I trust, that the use of 5W-20 motor oil in Ford Corporation products is advisory, and not mandatory to maintain the warranty. My source, who is in the automotive parts and supply business, contacted a local Ford Corporation dealership service facility (without divulging my identity!) and requested the information. He sells parts and supplies to this Ford shop. They told him that 5W-30 was fully satisfactory, but that was the only acceptable substitution.
#7 of 428 nooooooo way
Dec 21, 2002 (10:52 am)
No way I'd ever put 5W-20 in my engine. None. The reason Ford is mandating 5W-20 is to improve their CAFE and to follow up on assurances made by Bill Ford that his company would be more environmentally sensitive. IMNSHO, its nothing more than a political decision with some business benefits. Ain't no benefit to a Ford vehicle owner AFAIK.
Honda is doing it for similar reasons. Honda as a company has always been a leader in fuel economy and emissions technology. It's part of their core business values. So the use of 5W-20 fits perfectly into their global corporate image.
I'm sure the product quality of the 5W-20's is fine. But there is no long term, real world proof that it will protect an engine over the long haul. Oil weights like 5W-30, 10W-30 and 15W-40 have been tested and proven over the years.
Besides, its not like Ford redesigned all their engines to work best with 5W-20, is it? The 4.6's and 5.4's and 3.0 Duratec's and 2.0 Zetec's were running just fine on 5W-30 and 10W-30. Now all of a sudden they can only run 5W-20? I ain't buyin' it unless I see documented proof of the engine mods.
Dec 21, 2002 (12:13 pm)
What you choose to do after warranty may be different than during warranty as well. Some mfgrs may help with major cost problems shortly after warranty is up, but they are not under any obligation to do it.
Far as I'm concerned, after warranty the vehicle is mine and running thin "CAFE" rated oils is much further down on my "to do" list than running thicker "ENGINE PROTECTING" oil is. Warranty period is a very short part of the life of vehicles that I have owned/currently own.
A person who leases a vehicle is much less concerned with longterm protection than a person who expects at least 200k miles, mfgrs know that leases make a high percentage of vehicles now driving around...they also know that most people don't keep vehicles for that long (due to wrecks/trade-in every 2 years, whatever the reason).
Each of us has our own priorities...
#9 of 428 bretfraz
Dec 21, 2002 (12:18 pm)
To go along with your question about whether the engines are changed or not, I believe there is a Ford bulletin that suggests 5W20 is ok for older engines going back to 92 or 93.
I saw it over at www.fordcontour.org if you are interested in looking at it.
I posted the text of it over at www.mpvclub.com
Bottom line, this tells me it probably has nothing to do with closer tolerances and everything to do with better fuel economy.
#10 of 428 It's a CAFE thing like bret said -
Dec 21, 2002 (1:02 pm)
That's all. I'd use 5W30 unless climate conditions call for other selections.