Last post on Dec 09, 2013 at 3:40 PM
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Car Buying, Biodiesel, Diesel, Hybrid Cars, Coupe, Hatchback, SUV
#9662 of 11731 Re: how many miles yearly to justify 2 vehicles [steve_]
Jun 15, 2013 (7:17 am)
Maybe Gary can use that gas sludge and varnish excuse, along with the shot springs, to convince his missus to dump the Lexus.
I don't think Premium gas has the sludge factor of RUG with ethanol. The Lexus has sat for months and run fine. Sat from last October to March and only took 12 gallons to fill. Got the average 17.27 MPG. I don't know about ULSD. I do know the high sulfur diesel would get old and stale. I don't think I would run it in a modern diesel engine. Maybe my Kubota tractor.
So I don't think that is an option to get rid of the LS400. When I mentioned the timing belt she said make an appointment and we will take it in. I don't think the cost to maintain it is a factor in the equation. She wants it in the garage to drive to Albertson's or the Viejas outlet center that are less than 5 miles from home. No freeways involved so not much worry with her driving it. Sad part is my Nissan Frontier is the newest of our fleet and it sits outside. It also gets the most miles, about 6000 per year.
#9663 of 11731 Re: 1990 lexus with factory shocks !? [elias]
Jun 15, 2013 (1:38 pm)
This post will fall under TMI and off topic for springs shocks/struts have nothing to do with diesels.
Apologies in advance if the post is NOT apropos.
The bottom line for the springs and shock/struts/combination is that both should be fine (SAFE) even after the 100k plus miles and time factors (on Gagrices Lexus example). They will have to sell for other reasons.
The reason for the TMI are two fold. First off the Lexus sprrings, shocks struts are of VERY high quality and shocks and struts are made by Tokico. So unless the shocks, struts have sprung leaks, they should be just fine. Do the springs settle? ABSOLUTELY !Do the shocks and struts lose function? Yes they do degrade. The ride was DESIGNED to be compliant.
Since the subject of shocks, struts, and springs probably more arcane, there is probably just as much folks lore and old husbands/wives tales as current science and technology. Years ago a couple of "hard core VW TDI's got going on suspension systems for the TDI's. Longer story short was that VW shocks with 95k miles was shown to have degraded app 10% off "brand new". To add to the mix is there are no "standards". One obvious standard is a shock or strut leak (run to do an R/R in that case). Another is a broken spring. (again run to do an R/R in that case). One that falls under "folk lore or do not bother me with the facts is "the stiffer is better" mantra. Another is the normally "designed in" "compliant ride" is bad mantra. However if one wants a stiffer ride or HATES compliant rides that is a whole different set of parameters and issues.
Lastly not even hard core car mags etc. run shock strut dynos. Needless to say there is little in the way of "data".
#9664 of 11731 Re: 1990 lexus with factory shocks !? [ruking1]
Jun 15, 2013 (1:46 pm)
The bottom line for the springs and shock/struts/combination is that both should be fine (SAFE) even after the 100k plus miles and time factors (on Gagrices Lexus example).
I have to agree. The way I see it if the Lexus specialist did not see any problem with the Shocks or any other suspension parts why change for the sake of change. I am sure if he felt they were needed during the 4 times he has worked on the vehicle, he would have let us know. Also looking at the price of components in the suspension, shocks would cost way more than the car is currently worth. Each front hydraulic shock (part #7) $1539. I will put up with the Buick like ride when forced to drive the car. I think with dual shocks it was designed to take a lot of use.
#9665 of 11731 2014 Jeep Grand Cherokee EcoDiesel
Jun 15, 2013 (4:27 pm)
This is the first review I have found of a cross country test. It is by MT.
Our initial impressions of the 2014 Grand Cherokee's fuel economy claims were mixed. The first tank of diesel got us from downtown Austin to a fuel station some 421.7 miles away in Pecos, Texas. We killed the first hour or so sitting in stop-and-go traffic. Once on the open road, we encountered probably the worst headwind I have experienced. This, coupled with an 80-mph speed limit, wasn't a good combination for efficiency. The Jeep drank 21.4 gallons, which calculates to 19.8 mpg -- a little over 1 mpg shy of the EPA city rating. The following tank brought us to Benson, Arizona, 440.3 miles closer to home. The wind had subsided a bit, but was still present. This time, the Jeep took 18.8 gallons, returning 23.4 mpg -- better, but still nowhere near EPA numbers. The final leg racked up another 544.1 miles with roughly the last 110 dealing with San Diego and Orange County traffic. Our last fill-up required 21.1 gallons to fill the tank, giving us 25.8 mpg for that leg, and an average of 22.9 mpg for the entire trip. Fuel economy kept improving over the following week, jumping to 26.4 mpg in combined driving during evaluation loops.
#9666 of 11731 Re: 2014 Jeep Grand Cherokee EcoDiesel [gagrice]
Jun 15, 2013 (4:52 pm)
I am a bit confused about their confusion. Given that Edmunds.com lists EPA 17/24 mpg for the 14 JGC diesel 4 wheel drive, it woud appear to be hitting and exceeding its mpg "marks" ? .
As with the VW Touareg TDI, the JGC diesel seems to be optimized for 80 to 81 mph. They didn't mention rpm, so in a sense it conceals more than it reveals.
As a point of comparison, the 13 VW T TDI is 20/29 EPA.
#9667 of 11731 Re: 2014 Jeep Grand Cherokee EcoDiesel [ruking1]
Jun 15, 2013 (4:56 pm)
Edmunds uses the EPA mileage ratings. As of this time the EPA does not have the JGC diesel ratings listed. Jeep on their website show:
Max Highway Driving Range:
21 city / 30 hwy – 4x2
Max Highway Driving Range:
20 city / 28 hwy – 4x4
Fuel Tank Capacity (gal)
The EPA does not have a listing for the GLK250 Bluetec either.
#9668 of 11731 Re: 2014 Jeep Grand Cherokee EcoDiesel [gagrice]
by Stever@Edmunds HOST
Jun 15, 2013 (5:03 pm)
I think the key is the comment that "Fuel economy kept improving."
Some people get EPA mpg out of the gate, but it took a lot of miles for my van to hit its stride.
#9669 of 11731 Re: 2014 Jeep Grand Cherokee EcoDiesel [gagrice]
Jun 15, 2013 (5:04 pm)
Sounds like it is a case of the early testing catching up to the logistics.
#9670 of 11731 Re: 2014 Jeep Grand Cherokee EcoDiesel [steve_]
Jun 15, 2013 (6:55 pm)
I don't have a doubt about the JGC beating the EPA estimates. You really cannot depend on the auto publications to give a vehicle a fair shake on mileage runs. What would a Prius get going 80 MPH in a heavy head wind? Blown off the road.
#9671 of 11731 Re: 1984 chevette diesel with factory shocks !? [gagrice]
Jun 16, 2013 (6:38 am)
heh heh. nice parts diagrams. TMI can be fun for automotive geeks.
to make the discussion relevant to diesels i will point out that the heavier front end of the diesel vehicle exacerbates the 100% suspension degradation which is inevitable even with the highest quality suspensions, including those with 2 shocks per wheel.
shocks damping ability becomes effectively *zero* after one decade, never mind two decades... this is independent of whether there is a visible leak.
spring constant of springs degrades, inevitably, and especially after shock performance has degraded. put a new buick on the bumpy wet skidpad and then the 20 year old lexus and see which one can brake/turn/perform, and which one spins out and augers a few orange cones.
on a dry 20 mph drive to the market once per week, i suppose there's not so much worry, eh?
also to make it relevant to diesels we could post the suspension parts diagrams for the chevette diesel . i found a link showing window sticker of a 1984 chevette diesel. $7000. it doesn't include properly here for now however...