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I’m installing a dual battery system in my vehicle. There will be the starter battery/alternator combo and a secondary auxiliary battery that will charge VIA a 30A DC-DC charger that will turn on upon detecting alternator voltage. Now, if I may say so myself, I’m over engineering this. 4 AWG...

I’ve been around the “oil” forums and conversations enough to know that 99% of the conversation lays around “what does the manual say.” Which in my opinion is completely oblivious to the whole intent of this forum. With that said I have a ‘fancy’ European bike that truthfully just sits sounds...

I always remember this website when I’m doing maintenance on my cars, specifically when the 30k intervals come around as I order gallons of oil for the drivetrain. I got on here to do some reading and catch up on my morning commute today. I searched for some threads on gear oil, and I’m seeing...

I just started a new job that is all but 1.5 miles away from my home. The temperature needle doesn’t nudge 1 bit by the time I get to work. I mostly drive because I have to be in early and don’t want to walk through a couple of sketchy blocks while it’s dark out. With that said I’m looking at...

I’ve got a 2012 wrangler jku with 200k on her. On hot days she still drives great. When it gets cold the transmission slips between shifts until the fluid gets warm. Alternatively if you put it into sport mode it shifts fine, granted it shifts at higher RPM when you do this. Though I would think...

I’ve been having some issues with the exhaust phaser on my 2016 Tacoma 2.7 so the timing cover came off. I was pleased to see how clean everything is minus a couple spots where some varnish has built up. Truck has 150k on it. Minus the first 20k where I’d buy fancy penzoil ultra platinum 0w20...

I bought my truck new. Flushed ALL the fluids around 2k. As far as the transmission is concerned I’ve been using redline mt90 every 30k. I’m around 130k now. Last service I added magnetic plugs to the drain and fill. I’m a little concerned with the amount of metal on them. Anyways, wanted to see...

I know this is more of an engineering question that most people won’t know the answer to but as the title suggests how do manufacturers go about selecting the oil weight they recommend for their manual transmissions? You have gear oil as thin as 75w all the way up to 75w90, and some even using...

I run 4.88s on a truck that originally came with 3.91. Love the extra gearing for trail riding and surpassingly there has been no MPG drop because of it. The thing just feels reved out at times but I have no problem with that. I was driving the other day and I got thinking what kind of long term...

Long story short I put 5 quarts instead of 4 quarts in my motorcycle. It’s a boxer engine and the thing was smoking out of the tail pipe right off the bat. What are your thoughts on recapturing the extra oil and using it down the road? These BMW motors naturally burn oil so toping off is going...

I’m an avid Toyota OEM filter user. I usually buy in bulk and pay under $5 including shipping. Anyways I was in a bind and out of filters so I went to advance and picked up a fram titanium. I will admit that iVe usually gotten a light tap for the first 10 seconds of start up on days below...

I know there is no real basis for this, but I typically change my differential oil every ~30k or so. I always use synthetic 75w90. This time around I bought some valvoline synthetic 75w90 gear oil and I couldn’t help but to notice how it flowed so well and easily, almost like water. I’m used to...

Before you think to yourself "oh great, another what oil is best thread" I want to mention that this isn't entirely one of those threads. I have a friend with a 2011 Ram 2500 cummins, and she's spending about $150 on oil changes. She does her own oil changes, and that's her cost in parts! She...

I was pretty impressed by the results. This is my last oil change with supertech though, I switched to the costco oil which I think most of the community knows is made by warren so I'm pretty much using the same oil. I made the switch because the costco oil is a better deal at regular...

Out of boredom I was looking up VOAs of different brand oils and when looking at the RL 5w30 VOA they have a [censored] ton of calcium, almost 3500ppm. https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4848497/1 I know their additive package wont allow them to get the SN rating, but...

I have a manual transmission Tacoma with the r156f transmission. Seems like a lot of people with this transmission and the previous generation 155f(2005-2015 models) complain about 2nd gear and 3rd gear engagement being best described as notchy. So far I've tried redline mt-90, motul 300v and...

This is mostly for my own curiosity and knowledge and I haven't ran into any issues personally. The 0w40 Euro oils we use for BMW,Mercedes, VW engines have and meet their respective factory certification which is fine, but I was curious why the API certification was only SN. From my...

I've always found it cool to see a 15 or 20 year old truck in excellent condition with original drivetrain because it was taken care of. My goal is to get 300k out of my vehicle minimum. I'm okay with having to do some wear and tear items along the way, but my goal is to get the most out of my...

Does anyone have factual information on if power steering fluid can be flushed out from ATF to CHF11s; if seal incompatibility an actual issue? It's too risky for me to even consider this given that my vehicle is only a couple of years old and I don't want to pay for parts that need to be...

About a year ago I redid the gears in my truck from the factory 3.91 to 4.88. From information I found from companies like east coast gear supply and a couple of other axle focus companies I decided to break in the gears with lucas 80w140 dino gear oil. They claimed during break in these oils...