Last post on Dec 20, 2011 at 7:53 AM
You are in the Isuzu Trooper
What is this discussion about?
Isuzu Ascender, Isuzu Trooper, SUV
Your Community Leader is paisan.
#335 of 3299 Air filter recommendations
Feb 19, 2001 (7:22 am)
Is there any reason to use an Isuzu brand air filter in my 1998 Trooper instead of a filter from a different company? In the past I’ve always used Isuzu air filters on my 2 Troopers but lately I’m beginning to wonder if they are worth the extra money. St. Charles Isuzu’s price, which represents 15% off manufacturer list, is about 24 bucks. Recently I noticed that the standard Fram filter is 17 bucks. Murray’s has all Fram filters 10% off right now, so the cost would be $15.30.
Any thoughts on whether the Isuzu filter is worth almost 9 bucks more than the Fram? Does the Isuzu filter do a better job of filtering? Does it last longer? How good or bad is the Fram filter? Are there other filters anybody would recommend? I’m not really interested in a K&N filter.
It has crossed my mind that Isuzu probably does not make its own filters but rather has a supplier for them. Anybody have any info on which company makes the Isuzu air filters? I'm sure the "Isuzu" name adds a few bucks compared with the supplier's own branded, identical filter.
#336 of 3299 Brands of Air FIlters
Feb 19, 2001 (8:48 am)
Interestingly enough, on other makes of cars, using oil analysis I have found that aftermarket oil filters actually do a bettter job then OEM, specifically the Mobil1, Pure One and Amsoil oil filters. On air though, the OEM filters seem to do a better job of filtering then the Frams and Purolators. Fram is garbage for all filters basically!!!!! Just purchased a used Rodeo with 58,000 miles so I have not had time to experiment with this issue as yet on Isuzu. The OEM air filters seem better constructed with the body and number of pleats.
What's $6 every 30,000 miles!
Feb 19, 2001 (10:00 am)
For my Trooper I've always Isuzu brand oil filters, because of the recommendations of Jake, the expert Isuzu mechanic on www.itog.com. I change the Trooper's oil every 3000-3500 miles with synthetic blend, so I don't think I would really benefit from a more expensive and potentially better filter, would I?
In my 95 Contour I initially got 2 free Mobil1 oil filters. I don't plan to keep using those $10 apiece. I've heard from contour.org folks that the Motorcraft filter is actually pretty good for the Contour's V6. I may switch to Purolator Pure One as a middle ground.
I've heard that Fram oil filters are crap but hadn't heard much about their air filters. I guess I'll probably stick with the Isuzu air filter.
armtdm, I think I might ask you and others on the synthetic oil forum why people seem to think synthetic blend is worse than dino OR synthetic oil.
#338 of 3299 gpm5 - idle surge
Feb 19, 2001 (1:22 pm)
Your cold start idle sounds normal to me. The surging when the IM gasket was bad was severe - from almost killing to 1000 rpm once every second or two.
#339 of 3299 cold start, filters, and oil
Feb 19, 2001 (3:18 pm)
Yes, I think that's normal on the cold start rpm and that is why I thought I'd post it.
In terms of air filters, I had mine changed with the oil at valvoline--didn't even check the brand but I looked at the two side by side and the number of pleats etc looked the same. Guess maybe I should be more picky but I haven't had a problem before.
I went with a Valvoline blend (not pure synthetic). I asked about mixing and/or changing over on here before. Most people thought that was not a problem, and that changing to synthetic was no problem on an engine with low miles. First time I've ever gone with a synthetic in any vehicle. I hope it wasn't a bad choice. Interesting someone might think a blend is not good. I'd like to hear why. It is supposed to help on fuel economy and high temp performance. We'll see how it does in terms of the burning a quart in 3000 miles. If pure Valvoline synthetic is even better I might go with that but it seemed a bit pricey if you change every 3000 miles.
Feb 20, 2001 (5:34 am)
The owners manual does say to use an oil that indicates fuel saving, which the blend oil (at least for valvoline) does indicate. Other than that not a lot in the manual.
#341 of 3299 I use Mobil One
Feb 20, 2001 (6:14 am)
but I change it every 5K miles. I have considered extending to 7.5K with an additional filter change midway inbetween, but decided 5K is fine. Parts/supplies for an oil change even with Mobil One is under $20, divided over 5K miles is less than 4 tenths of a cent per mile. Pretty cheap.
And, since tonight it is supposed to get down to -13F, the cold flow capabilities of synthetic can drastically reduce cold start wear...
#342 of 3299 To: bluedevils re:Blends
Feb 20, 2001 (7:11 am)
Off the shelf blends do not state what percentage of the blend is synthetic. Some are as low as 10% synthetic which to me is misleading advertising. Thus, not recommended. You can make your own blend by mixing 50-50 synthetic with normal dino oil if you wish. I am biased, I have used 100% synthetic for past 9 years on every car I own, currenlty 5 and it is in the engines, transmissions and gear oils. My change intervals are:
2 cars with 8,000-12,000 miles/year filter at 6 months oil once a year
1 car 20,000 miles./year, filter at 6,000 oil change at 12,000 miles (total current mileage 61,000
1 car 15,000 miles/year change oil and filter at 7,500, current mileage 131,000
1 car a twin turbo oil and filter at 5,000 miles
Oil (trend) analyis on all at least once a year, no problems noted.
#343 of 3299 slightly warm start
Feb 20, 2001 (12:51 pm)
I noticed today that it jumped briefly to 1500 rpm twice and then it settled in at ~1000 rpm.
#344 of 3299 97' Trooper Rear axle/differential noise
Feb 20, 2001 (3:34 pm)
I've recently purchased a 97' Trooper Limited with 51,000 miles on it. I made a 850 mile trip home in it, all the while, having to listen to an annoying whine (hum mm) coming from the rear of the vehicle. I didn't notice the whine until I got to about 60 mph. At that speed it overcomes any tire / highway noise and it just gets worse as you increase speed to about 75 mph. The only time the (hmmm) went away, was when on a downhill grade with basically no load on the drive train. When I got home I immediately crawled under the car to feel of the rear axle and differentials temperature. The outside air was about 32 I and the metal was quite warm to the touch, but not to hot to keep your hand on it. One other thing I've noticed, when getting between 75 and 80 mph a loud vibration coming from the rear of the vehicle. It remain until reaching about 85 mph and then it smooths out again. I thought this might be coming from the roof built-in rear window air deflector!?? Anyone else experienced this? This is very disappointing after paying what I did for the car. I've checked the level of gear oil in the differential and it was up to the fill hole (normal) and looked normal in color and texture. I did notice when removing the fill plug, a hissing sound like air escaping around the threads of the plug as I removed it. This surprised me a bit. I also own a 1988 Trooper which now has 120,000+ miles on it, and it has never had a noise (hmmm) like this. Is anyone else out there experiencing this kind of problem with their ewer Troopers?? Anyone got any ideas on a cheap fix? Has ISUZU issued any notices pertaining to this?? This is a beautiful car otherwise and I hate to get off on the wrong foot with it.
By the way, I've been reading all the posts about lubrication and the best oil I've found is Purple Royal. Check out Royal Purple . om