What liquids should we be putting in our cars?

[bimmerteck]

Synthetic on an old motor will result in new leaks, dont do it.

^This is a myth.


I run
91 oct
Mobil1 15w50
Redline MTL
Mobil1 75w90LS

[CleanAzzE30z]

Unless you have a chip, anything but 87 octane is a waste of money (in the octane respects at least).

Yeah Ive got a chip.... and some other stuff.


Mariano

[airkhin]

Got a question for everybody running Redline fluids in their diff/trans. whats the best redline to go with? just the mtl? ive heard of people using the shockproof (lightweight...) just curious what experiences... ;)

[jasonsnoddy]

87oct all day, doesnt make me flinch as much when i buy gas ;)

[ck_taft325is]

91 Premium
10w40 full Synthetic
Redline Differential and Trans fluid after a fresh flush
Distilled water as springs upon me.

S50 + ZF320 + S2.93 + TMS chip

If I ran an M20 I'd run nothing but 87octane. No reason for anything more, honestly. The S50 doesn't like anything less than premium and frankly, it's more economical for me to run premium as it gets me nearly 28mpg on my 80 + mile daily commute.

[TomSuddard]

93 octane
Royal Purple synthetic 10w-40
Redline MTL
Redline Gear Oil with friction modifier in diff.

[Huff]

Yeah Ive got a chip.... and some other stuff.


Mariano

Ohh... I KNOW you do and a LOT of other stuff. That's just directed to the stock people out there. They need to save the money they spend on that extra octane for parts that will make a real difference in there cars

[CleanAzzE30z]

Ohh... I KNOW you do and a LOT of other stuff. That's just directed to the stock people out there. They need to save the money they spend on that extra octane for parts that will make a real difference in there cars

True, especially with 100 octane being so much more expensive than already-expensive regular gas.


Mariano

[SpecM]

Mobil One 15w50 motor
Zerex G05 coolant
Redline MTL trans
Redline 75w90 diff
87 oct fuel (stock m20)

Sent from my Vortex using Tapatalk

[Violet88]

Got a question for everybody running Redline fluids in their diff/trans. whats the best redline to go with? just the mtl? ive heard of people using the shockproof (lightweight...) just curious what experiences... ;)

for the manual trans yeah just Redline MTL it does wonders

[airkhin]

^ how wonderful are wonders? haha, my //m has quite a bit of notchiness, especially when cold... 2nd gear is the biggest prob, doesnt even wanna engage sometimes when real cold...

(sorry to threadjack, dont mean to make this into prob thread, just seeing what people use most and what works best...) :)

[Holland]

Some of you should probably specify what engines you are running these fuels in. Like a stock M20 to say... a worked S14, not entirely fair.

[TimR]

Stock 2.5 bolt-on Mods, 91 all the time in CO. we get 10% eathonal in the winter BG44k, BG MGC trans, BG LSD II diff, Redline MTL trans and diff, Kendall GT I( sorry i've used this oil for 40 yrs) BG MOA

[LJ851]

Redline MTL is fantastic for BMW gearboxes. It especially improves cold operation. My '89 325is will audibly ping on 90% of 89 octane fuels out there. It is bone stock and i know this doesnt match other peoples experiences, But its been this way for 6 years and 100k miles.

[schtozo]

Stock (chipped and opened up exhaust with no cats) m20.
1- Castrol gtx 20-50 (motor)
2- redline mt90 (transmission)
3- royal purple 75-90 (differencial)
4- water and water wetter (cooling system)
5- 93 octane gasoline