What liquids should we be putting in our cars?

[Kershaw]

110 Oct with 13qts of redline, Motul, redline in diff, water and water wetter.

LIKE A BOSS!

synthetics in an old motor causing leaks is not just a myth. i dont know how valid it is in m20s though. but in the 13b renesis if you run it on non-synth for 70k+ miles then switch to synthetics you'll start to lose compression after 10k-20k miles.

the synthetics will clean up the deposits that are actually holding in compression.

[bimmerteck]

LIKE A BOSS!

synthetics in an old motor causing leaks is not just a myth. i dont know how valid it is in m20s though. but in the 13b renesis if you run it on non-synth for 70k+ miles then switch to synthetics you'll start to lose compression after 10k-20k miles.

the synthetics will clean up the deposits that are actually holding in compression.

Rotaries have some significant differences from piston driven engines. Oil leaks in old motors with synthetics are usually due to the old gaskets not the new oil.

Choosing a 13b failures as an example of anything seems flawed from the get go as they have had a remarkably high and well documented failure rate with Mazda's own prescribed 5w20 dino oil as well.

[Kershaw]

that is absolutely true. but i was pointing out that its not just a myth. it is entirely possible. synth oil will clean away the deposits of dino.

[bimmerteck]

that is absolutely true. but i was pointing out that its not just a myth. it is entirely possible. synth oil will clean away the deposits of dino.

Some synthetics do contain greater amounts of detergents, which remove deposits. If they remove oil sludge that's a good thing, and the motor likely should have been leaking the whole time. They didn't "cause" the leaks they made the lapse in maintenance readily apparent.

The motor below wasn't leaking a drop, but that's no reason to leave the deposits in there. The new leaks after cleaning this head out weren't from the new oil but the severe lack of maintenance.(if you can't tell by the sludge buildup in the first place)

IMG_4703 by systemdelete, on Flickr

[airkhin]

^ wow

[foundation982]

Some synthetics do contain greater amounts of detergents, which remove deposits. If they remove oil sludge that's a good thing, and the motor likely should have been leaking the whole time. They didn't "cause" the leaks they made the lapse in maintenance readily apparent.

The motor below wasn't leaking a drop, but that's no reason to leave the deposits in there. The new leaks after cleaning this head out weren't from the new oil but the severe lack of maintenance.(if you can't tell by the sludge buildup in the first place)

IMG_4703 by systemdelete, on Flickr

If I opened my head up to that I would probably eat a shotgun

[bimmerteck]

If I opened my head up to that I would probably eat a shotgun

it's ok, once you get the old pile of oil out you can just pour the new oil in. :mrgreen:

Moral of the story what oil you put in isn't nearly as important as how often you change it.


IMG_4707 by systemdelete, on Flickr

[sweet6e30]

first off,...... HOLY SHIT on that sludge ^^^^^^^^^ wawaweeeee



2nd.
91 octane and sometimes 94 when i can ( dinan chip for 91)

i use 10w60 liqui moly sythetic oil

http://www.liqui-moly.de/liquimoly/web.nsf/id/pa_usa_home.html

mahle oil filters, and fuel filters

super bosche spark plugs r cheap so i usually change them out every 3rd -4th oil change

red line heavy shock proof syn in my diff and tranny

regular ATF for power steering

ATE racing blue brake fluid

regular coolant with a water wetter or motul mocool

i over maintain my car, oil changes i usually do every 4000 kms even though oil could go much longer, i have peace of mind knowing that its clean in the motor
:loco:

i get cost price on stuff, since i work at a shop so its pretty cheap

[e30Hungry]

Some synthetics do contain greater amounts of detergents, which remove deposits. If they remove oil sludge that's a good thing, and the motor likely should have been leaking the whole time. They didn't "cause" the leaks they made the lapse in maintenance readily apparent.

The motor below wasn't leaking a drop, but that's no reason to leave the deposits in there. The new leaks after cleaning this head out weren't from the new oil but the severe lack of maintenance.(if you can't tell by the sludge buildup in the first place)

IMG_4703 by systemdelete, on Flickr

I just got goosebumps -_-

[AdrenalinJunkie]

The Redline shockproof is for dogbox trannies. I use it in my Formula Ford since it supposedly cushions the shock of gear changes, which are done without a clutch.

[bben76]

Stock m20 with 200k+

If octane rating is the reference standard of a fuel's tendency to self ignite during compression prior to the desired position of the piston in the cylinder as appropriate for valve and ignition timing ...isn't it true then that using a higher rating can result in less pre-ignition and detonation?

I run 89 or 93 and observe less of both. And I run 87 during winter when engine runs cooler in general and is less prone to pre-ignition and detonation.

[trackjunkie21]

with my m42 I ran 93 octane because very few station around here had 91 octane, but when they had 91 I sure as def used it. Castrol Syntec 5w40 oil.
With the new m50, I run 93 octane because again very few places have 91 and for oil I use Total(Elf) 9000 energy 5w-40. Awesome oil, highly recommended by BMW.

[Pantless Spency]

i just put water in every hole besides the gas tank. water in the cooling water in the tranny water in the diff water in the engine. usually gets me by pretty scotch free. but my diff and gearbox whine like little sluts and my car runs a little hot.

[trackjunkie21]

i just put water in every hole besides the gas tank. water in the cooling water in the tranny water in the diff water in the engine. usually gets me by pretty scotch free. but my diff and gearbox whine like little sluts and my car runs a little hot.

I think your muffler bearing are shot, hence the whining you hear from the diff area.

[Pantless Spency]

I think your muffler bearing are shot, hence the whining you hear from the diff area.

Can't tell if your joking but I was jk about water in every hole and my diff/trans whine lol