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I have 156,000 miles on a 2004 Colorado. The dex cool still looks very good. A clear, bright orange/red, no buildup in the overflow bottle or under the rad cap. The truck runs at a consistent temperature, and the heat works very well. Similarly to what SteveSRT8 says, I've basically decided to...

Originally Posted By: Garak I guess sometimes engines just do whatever they want. I think you may be onto something here haha. My understanding on using thicker oils to prevent consumption would generally see that a thicker grade would be used as opposed to simply a thicker oil in the same...

Since my truck started consuming oil, I've been experimenting with different brands. Started consuming Castrol GTX, approximately 1.5 quart in 3000 miles. Then PYB, similar consumption. Then VWB. It didn't use any valvoline. 6 quarts in, 6 quarts out. Now I have QSGB in there and it seems to...

I've heard that saying and have a bit of evidence to support it haha. It was a '95 1 ton truck with a 350. The first time I changed the oil, all the metal in it felt like sand. I was surprised it went as long is it did before it failed. It had been repossessed, and I had a feeling the former...

I had a GMC truck for a little while that spun a main bearing. Regarding the original post, IT HAD BEEN NEGLECTED. I got it cheap, it was beat up, and the oil pressure was low. Despite that, it ran perfectly for several, several thousands of miles since I had acquired it. Every morning, I would...

In my view, information is always important and useful. As far as I'm concerned, information refers to everything; facts, opinions, thoughts, feelings, and importantly, experience. While much of this does not necessarily constitute anything reliable, repeatable, testable, or objective, at the...

I've always used Castrol GTX and VWB if that were unavailable. So, I'm really a Castrol fan I guess, but I must report that between GTX and VWB in my current vehicle, consumption has been significantly less with fills of valvoline. I intend to continue experimentation, however!

Originally Posted By: Gene K Change the rear axle lube and trans lube. Make sure the new lubes meet spec IE dont put GL5 in the trans unless it calls for it. I'll check the manual again to be sure, but as far as I know, the differential and trans call for synthetic 75w-90. "75w90 GL-3" is...

Good point on the engine oil haha. That has occurred to me throughout my thinking on this. And yes, it's a stretch for me to see how changing the fluid could cause a problem. The only reason I waited so long is that I wanted to do it around 150k miles to give it a good benchmark. But it seems I...

The vehicle is my '04 Chevy Colorado 5cyl 5-speed. It now has roughly 154k miles, and I acquired it used with 135k or so. I drive it very easily, but I drive 1000mi in about a week and a half. I'm fairly confident the rear differential fluid has never been changed, and also that the manual...

The worst thing I've actually seen is foaming the oil. But I've poured a quart of MMO on top of an already full sump, and when I drained the oil about 500 miles later, there was no foam.

Current supply: 7 quarts PYB 5w30 7 quarts VWB 5w30 3 quarts Castrol GTX 5w30 1 quart Autozone store brand 5w30 My total oil stash: 18 quarts Grand total = 33534

I have a small funnel for filling my engine, and a larger one for putting the old oil in a jug for disposal. Cleaning up after each oil change, I spray both funnels and the drain pan out very well with a garden hose and nozzle, being sure to try to get all the oil off of the items. By the next...

1995 Chevy 1500. 4.3L automatic. Since it had 130k miles on it, it got Castrol GTX with either a Bosch Premium or AC Delco filter every 3000 miles. Sold it with 207k miles. Ran perfectly. Never used any oil. Currently 2004 Chevy Colorado 3.5L 5-speed. Got it with 135k miles and just crossed...

After sitting over night, I let my truck idle for a couple minutes before driving. So by the time I drive, the idle has come down from 1300rpm or so to 800-ish. It hovers around 1000rpm for a minute, but if I drive off before it comes down, it always seems a little finicky. If it's warm enough...

http://www.355nation.net/forum/i4-i5-engine-drivetrain/23791-broken-pre-cat.html That's the bottom edge of the manifold cat having completely separated from the rest of the header. Same problem as mine. The oil has always had a fuel smell, and when I change it, I normally get small bubbles...

Hello anyone and everyone! Thanks in advance for any responses. To the matter at hand.... The vehicle is a chevy colorado with the I5 motor. I obtained this truck with roughly 135k miles on it and have been using it to deliver pizzas. That typically consists of 80-120 miles of city, stop-and-go...

Maybe there was a reason I couldn't find anything about this in the first place... Thank you all very much. You have raised good points. As far as getting the problem fixed, I don't use snythetic oil, and with 146K miles, my Colorado hasn't burned a a lick of oil. Knock on wood.

This forum is completely awesome. I've been reading posts on here for quite a while now and have decided to take the plunge. I read all the info on the home page and did pretty well on the Q&A haha. I am also curious for an oil recommendation, but I've seen lots of those recently am pretty...