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Comment by sokoloff | Hacker News Reader

Jumping from only light maintenance to changing a rear main seal is quite the leap!

No better feeling though! Especially when running the numbers post-fix (insert CS joke here) and comparing to shop quotes. I keep spreadsheets for two cars and an older jet ski and I've saved ~$12k this year alone by wrenching solo assuming $100/hr = standard labor rate. I've learned a TON of cross-functional skills, have full control over the parts and repair, and it's just a feel-good way to step away from my desk when things slow down at work.

I remind myself of the the 5-digit savings whenever I'm in line at Harbor Freight... which is often.

That $12K is tax-free as well. You’d likely have to earn ~$20K to pay $8K in taxes to be left with the same $12K net.

You're absolutely right, I hadn't thought of that. Very interesting (and affirming) way of looking at those savings.

Can confirm. I did brakes and rotors on all four wheels on my 4WD 2012 Tundra a while back. Went smoothly and I knew that all bolts were properly torqued when I was done.

You'll probably be less time efficient than a full-time mechanic though.

By a large margin, definitely. I was hesitant to attempt repairs on my daily before I picked up car #2 because it was my only mode of transportation. Being able to switch between the two now gives me a much wider time margin for potential errors and my feelings about DIY repairs have gone from "keeping this car alive is going to bankrupt me" to "this is a fun hobby."

When confidence in repairability is low and stakes are high, it probably makes sense to opt for a shop.

I'm sorry, but this is an unnecessary and negative comment. I don't know why you made it.

Of course a professional will accomplish tasks faster than a DIY'er checking YouTube.

But, as OP says, there's savings AND personal satisfaction involved. Why is time-efficiency the metric you're weighting in value?

It has nothing to do with negativity. Maybe OP is accounting for an efficiency loss rate, but they didn't mention it, so I brought it up. What good are inaccurate calculations?

It matters if OP is multiplying the hours they spent times $100 rather than the time the mechanic would quote (usually from a flat rate manual) times $100/hr.

If a pro mechanic would charge me $100/hr times the book time of 1.3 hours to change pads on my car and I take 3 hours to do it, I saved $130, not $300.

For simple jobs, I can usually match or slightly beat the book rate. Because I don’t have a lift, a lot of undercar work takes me loads longer.

You're quite right about how good it feels to do such work yourself.

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