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Author Topic: Engine Maintenance Tips: Additives & Oil  (Read 95069 times)

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Offline St Giles

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Re: Engine Maintenance Tips: Additives & Oil
« Reply #10 on: December 24, 2025, 12:39:29 PM »
Quote from: Michaelknoxville on December 24, 2025, 09:36:06 AM
That’s true but the crisis right now is real. New cars just like new homes are a craps shoot. If you have something reliable that’s older your better off putting money in it till it rots than spending 60-70000 on a lemon

https://m.youtube.com/watch?v=Awg5kffgqss&pp=ygUdbW9kZXJuIGNhcnMgYXJlIGdldHRpbmcgd29yc2U%3D


The x tools d7 is the best thing I ever bought. It’s saved me and the neighborhood 1,000s I made my money back off it the first week.

https://www.ebay.com/itm/305082527010?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1uznGsLtCR9qT_YvC4yI7hQ18&norover=1&mkevt=1&mkrid=711-213727-13078-0&mkcid=2&itemid=305082527010&targetid=4580771614098644&device=m&mktype=&googleloc=64808&poi=&campaignid=603247547&mkgroupid=1234752552191001&rlsatarget=pla-4580771614098644&abcId=9316119&merchantid=51291&msclkid=1a64d8e13b481b5f842cb1ad3ca5245d
Can the D7 work without an internet connection with all available features? Can it work for more than a month or 2 without internet? It sounds like a great tool, but may just be another Chinese spy device like DJI drones that require frequent "updates" from China. Regardless, internet dependent and subscription dependent tools are more of an inconvenience and waste of money. 
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Offline Michaelknoxville

Re: Engine Maintenance Tips: Additives & Oil
« Reply #11 on: December 24, 2025, 10:42:32 PM »
Quote from: St Giles on December 24, 2025, 12:39:29 PM
Can the D7 work without an internet connection with all available features? Can it work for more than a month or 2 without internet? It sounds like a great tool, but may just be another Chinese spy device like DJI drones that require frequent "updates" from China. Regardless, internet dependent and subscription dependent tools are more of an inconvenience and waste of money.
It does actually run without internet. The only time you need to hook it up is for updates but it comes with everything preloaded up to 2024-2025 ish depending when it was manufactured. The only updates mandatory are when you are looking at cars manufactured past the date the x tool was manufactured. So if you wanted to keep it off the internet completely it’s an option I got the hard cable version not the WiFi so mines been offline for almost a year now. It’s very rare they add older car data into it. 
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Offline St Giles

  • Supporter
Re: Engine Maintenance Tips: Additives & Oil
« Reply #12 on: December 25, 2025, 09:41:37 AM »
I just remember being about to buy one, and going through the bad reviews (you never know what info you'll fine there, helpful or not) and one or two on either the D7 and/or D8 said it has to connect to a Chinese IP every 30 days or it stops working. I'm not convinced that Snap-On would have all info available on the device even for $5-10k, but I haven't looked into that.

If you can keep it disconnected from WiFi 100% of the time and still confirm the advanced functions work on any car not newer than the updates it already has after a few months, I may buy one. That would be a huge help. I can't remember why I wanted the D8, but I wanted it to do everything.

Can your D7 show the mileage on the various modules, like the engine module to compare it to the odometer? That would be one main reason I'd get one to confirm I (or whoever I'm helping) is not getting a car with a rolled back odometer.
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Offline St Giles

  • Supporter
Re: Engine Maintenance Tips: Additives & Oil
« Reply #13 on: December 25, 2025, 09:49:31 AM »
I also learned that it is better to let filters, such as the air filter, go longer before cleaning or replacing, because the dirt it collects improves it's ability to catch smaller particles, with only a minor decrease in engine power in normal use cases. They design filters to be over-sized so that they can still flow while holding a significant amount of dirt. I think it unlikely, though not impossible, for engine filters to blow out from the suction experienced by filling to capacity due to the strength of their design.

A tip to help make sure no fine dust leaks around it is to use a bead of grease on the mating surfaces of the filter's seal. Even fine dust, which will most likely be hard minerals from the road, can blow around the pistons and end up in the oil increasing wear.
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Offline Michaelknoxville

Re: Engine Maintenance Tips: Additives & Oil
« Reply #14 on: December 25, 2025, 08:25:18 PM »
Quote from: St Giles on December 25, 2025, 09:41:37 AM
I just remember being about to buy one, and going through the bad reviews (you never know what info you'll fine there, helpful or not) and one or two on either the D7 and/or D8 said it has to connect to a Chinese IP every 30 days or it stops working. I'm not convinced that Snap-On would have all info available on the device even for $5-10k, but I haven't looked into that.

If you can keep it disconnected from WiFi 100% of the time and still confirm the advanced functions work on any car not newer than the updates it already has after a few months, I may buy one. That would be a huge help. I can't remember why I wanted the D8, but I wanted it to do everything.

Can your D7 show the mileage on the various modules, like the engine module to compare it to the odometer? That would be one main reason I'd get one to confirm I (or whoever I'm helping) is not getting a car with a rolled back odometer.
“Can your D7 show the mileage on the various modules, like the engine module to compare it to the odometer? That would be one main reason I'd get one to confirm I (or whoever I'm helping) is not getting a car with a rolled back odometer”


yes! It definitely can as long as the car provides it. It’s bidirectional so you can get to every module the car has and communicate and or actuate it. But as far as the updates go they are absolutely up to you. If you choose not to update it the only things you will miss are new models and very few updates to the old ones. I haven’t updated mine or hooked it up to WiFi since I ran out of free updates about a year ago 
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