- Joined
- Feb 10, 2013
5,000mi oil changes. Especially on a turbocharged vehicle and ESPECIALLY on a diesel. Turbo's torture oil. And if your hooning it on a highway. Idle the car when you pull off to let the turbo cool off. Otherwise you'll cook the oil settling in the turbo and causes coking. Which ruins the bearing surfaces.On oil changes; there is probably a more optimal routine for every individual car but change the oil every 3k miles. Ignore what the manual says or what the computer says.
Is it optimal? Maybe not, would be surprised if it is, but as a general rule of thumb it has never failed me. I've seen expensive German engines run 200k miles with no issue because the owner was diligent about changing the oil.
Make sure to know your oil spec. Don't grab cheap 5w-30 if your car has a specific oil spec, say VW 5w-30 507.00 oil. You'll be paying yourself to buy it.
You can however, cheat with some oils. Motorcycles for example. If your bike takes 10w-40. And practically every Japanese bike made from the 70's and onward does (if it's not a v twin) take a look at Rotella t6 15w-40 diesel oil. Just check the back of the jug to see what oil specs it's been rated for. In this example it's JASO MA/MA2 so it's safe for wet clutches. Great for flat tappets, as it has plenty of zinc. And it's affordable high quality & high heat resistant so it doesn't matter if it's air cooled or water cooled. It's rated for so many standards that I run it in a 440 Mopar magnum and my bikes. So a 5 gallon bucket bought in the beginning of the year provides multiple oil changes for more than one vehicle.
If you have a manual transmission. Please check what type of synchros you have. Make sure your gear oil is safe to use with brass synchro's if you have an older vehicle. It won't immediately cause a problem. But it will eventually degrade. Many oils are. But can be formulated with steel synchros in mind, which are common on cars with dual mass flywheels.
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