I have a lx470 with 140000 miles on it. It runs great and all the maintenance is up to date. I am running full synthetic motor oil and change every 15000 miles. I am looking to the day when I will need to replace the motor. Does anyone know the feasibility and expenses related to this job?
Engine overhaul
- Thread starter daletron
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These engines go 250k plus easily. There are quite a few members with more than that on original engine and tranny
There are two options, remanufactured or used engines, with reman being more expensive. I would guess a solid used engine is $2-3k, a reman probably double that. R&R is probably 20-25 hours, @ $100/hr is $2000-2500. I wouldn't think on it too hard, the prices will likely be completely different when the engine needs major repair.
I believe there are some threads about engine replacement (maybe 2 or 3).
I'm at 241k on original engine and transmission. Zero leaks from either engine or transmission. Change oil at 5 k intervals with full synthetic. When I check the dipstick at 5 k intervals it is still on full. This motor is amazing.
I wouldn't even ask the question until you've added a zero to those miles 
But, seriously, the 4.7L is a truly great engine and will run for long time with good maintenance. Major internal work is many years away for you and the rest of the truck may be iffy by then? However, I don't know about going 15K miles between changes. Have you had the oil tested to make sure that's ok?
But, seriously, the 4.7L is a truly great engine and will run for long time with good maintenance. Major internal work is many years away for you and the rest of the truck may be iffy by then? However, I don't know about going 15K miles between changes. Have you had the oil tested to make sure that's ok?- Thread starter
- #7
Thanks for the information. It looks like I could go another 150000 miles and decide then. But to spend close to $10000 to replace a motor I might as well upgrade to a 570 at that time with a 100000 miles on it. I will change the oil more often. I thought full synthetics would go 25000 miles. My bad.
These things run on sludge fuel mixed with sand and mud with infrequent oil changes in most parts of the world and still go for 300K+ miles! Electronics and UV damage will take out a 100 before the engine will go south. Most of us (myself included!) way over maintain our rigs. For me it's a labor of love an an excuse to commune with grease in the man cave.
That said, 15k is probably beyond my personal comfort range but you can always send a 10k sample to Blackstone to see how she's doing.
Full disclosure: I change my oil once a year on the LC which is about 6-7K miles. On the LX do it on the 5s; 75, 80, 85, etc. Comes out to about 2x per year.
That said, 15k is probably beyond my personal comfort range but you can always send a 10k sample to Blackstone to see how she's doing.
Full disclosure: I change my oil once a year on the LC which is about 6-7K miles. On the LX do it on the 5s; 75, 80, 85, etc. Comes out to about 2x per year.
15k might be okay. 10k is definitely ok in my opinion. I go 7,500 just because I get rotation and need something else by that time... Oil looks pretty clean at that interval. You could change the filter at 7,500 and top it off and go another 7,500 as a safe option.
140k miles is hardly broken in yet.
Run it another 300k and check back with us then.
Run it another 300k and check back with us then.
This is a good example what not to do:
1. switching to full synthetic oil - for those you glorify and pray to synthetic products this is a mute point.
2. changing oil intervals 15,000 miles - ?! that is a stretch, I call it lazy.
1. switching to full synthetic oil - for those you glorify and pray to synthetic products this is a mute point.
2. changing oil intervals 15,000 miles - ?! that is a stretch, I call it lazy.
The OP already explained he thought syn was good to 25K and is now more knowledgeable. Your comment 1 suggests you have some information to proffer about the value, or lack of value of synthetic oils. I don't have a stance on the oil, but this forum welcomes members seeking information and leading a member with 4 posts to threads on syn v dino oil or longevity of oil would be more useful than the comments above...
Happy Holiday, All!
Moot
To the OP,
All oil filters are not the same, and if you are changing your oil at extended intervals (say anything over 5K miles) you should consider also using a filter specifically designed for longer intervals. My personal preference are Mobil 1 filters which use a different filter media and a larger filter media surface area. It does a better job of filtering and has more capacity for contaminants.
While I'm on the bandwagon, the standard recommended Mobil 1 filter for my vehicle ('02 LX470) is part number M1-102. However they also make another filter that is slightly larger that fits perfectly. I use that filter and its part number is M1-209.
The Mobil 1 filters do cost more than the typical Fram, etc brands and depending on where you buy your oil they may not carry them. I get mine from Amazon.com and keep a spare on hand.
Welcome to the forum!
All oil filters are not the same, and if you are changing your oil at extended intervals (say anything over 5K miles) you should consider also using a filter specifically designed for longer intervals. My personal preference are Mobil 1 filters which use a different filter media and a larger filter media surface area. It does a better job of filtering and has more capacity for contaminants.
While I'm on the bandwagon, the standard recommended Mobil 1 filter for my vehicle ('02 LX470) is part number M1-102. However they also make another filter that is slightly larger that fits perfectly. I use that filter and its part number is M1-209.
The Mobil 1 filters do cost more than the typical Fram, etc brands and depending on where you buy your oil they may not carry them. I get mine from Amazon.com and keep a spare on hand.
Welcome to the forum!
Without launching into an all-out oil thread (pick your topic), extended oil changes are more the norm rather than the exception these days. Draining 3,000 mild "old" oil is simply a waste and irresponsible (especially in the case of the 4.7). A 10-15,000 mile oil and filter change interval is perfectly acceptable as proven by engine oil analysis and manufacturer recommendations.
you have to remember that it can look full but because engine create water vaper whn ngincooling down
Thew is no question about that synthetic oil is stronger (I did not say better) that conventional - the engine must be engineered to take synthetic oil what is that mean when I say engineered . suppose machine shop is building a part and they have a spec to build with 1/8 ,1/16, 1/32, 1/64 tolerances . So my FJ80 engine build with 1/8 tolerances but my LC200 is 1/64 tolerances 1/64 parts are very tight compare to 1/8
if the parts are very tight they need oil with very small molecular structure to lubricate them and that where synthetic oil be appropriate.
I changed my oil every 5k and my engine was 100% when I sold it at 331k miles. Transmission too. I have never personally heard of anyone able to wear out a well maintained 4.7.
Has anyone worn out a poorly maintained 4.7?
The molecular structure of synthetic oil is uniform, not smaller.... Not that the size of a molecule is relevant to the space between a piston and the cylinder.
Multi-viscosity oil is available in conventional and synthetic. Don't get me wrong, synthetic is a more consistent product and may perform better in smaller tolerances, but c'mon.... If you use the proper viscosity oil, there is no problem using synthetic in an engine that is rated for conventional. Please correct me if I'm wrong.