how good are lucas products

[dezpimpdada]

i have been doing some reading regarding changing the gear oil for my 02 boxster S. factory uses only mobil PTX ot shell transaxle synthetic. some recommd using mobil delvac 75w-90. i am curious to know if anyone has tried to mix some of the lucas products to the factory oils. i have been told that adding lucas oil stabilizer with the gear oil can prevent slipping for the older/ high mile cars.

my friend has tested this on his 88 E30 M3 and gotten great results, but i am still a bit sketical on putting anything other than the factory recommd.

i have used lucas fuel treatments and noticed some improvement in gas milage.

any thoughts guys~

[phillipj]

i have been doing some reading regarding changing the gear oil for my 02 boxster S. factory uses only mobil PTX ot shell transaxle synthetic. some recommd using mobil delvac 75w-90. i am curious to know if anyone has tried to mix some of the lucas products to the factory oils. i have been told that adding lucas oil stabilizer with the gear oil can prevent slipping for the older/ high mile cars.

my friend has tested this on his 88 E30 M3 and gotten great results, but i am still a bit sketical on putting anything other than the factory recommd.

i have used lucas fuel treatments and noticed some improvement in gas milage.

any thoughts guys~

If you do a search you will find a plethora of opinions on lubricants.

Good luck,

Phillipj

[zegypt]

I bought a 1997 C4S five months ago with 90k miles, the power was relatively lackluster, and I had to add at least a quart of oil a month. I also live in the hills and the car would knock a bit going up the hill in 3rd gear and sometimes in 2nd gear. After putting the Lucas synthetic oil stabilizer into the car, the power has noticeably increased and the car doesn't knock going up the hill in even 4th gear. A huge difference. I still haven't noticed how much oil is burned monthly, but it should be less. Certainly the pressure in the engine has increased. I highly recommend it.

[R Clark Stewart]

Ok, LOS is just thick greasy slop in a $12 quart jug.

If you want or need a thick motor oil, buy a full-formulated product, not "additives" (of which there are none in LOS anyway).

As far as gear oil, Mobil 1 75w-90 is excellent for the rear diff, any GL-5 will work fine.

If you want Manual Trans Fluid, I believe a 75w-90 is too thick, especially in cold, therefore a 70 or 75w-80 or 85, like for an Asian trans, is a better choice.

Don't use GL-5 in a man trans, it has too much friction modifiers added, which screw the syncro material, like in a motorcycle wet clutch. It has nothing to do with the brass parts.

Current VAG MTF fluids are extremely thin, thinner than ATF! Here are a few fluids compared under cold temps...90 weight is quite stiff in cold.

Syncromesh is the best MT fluid out there, cheap too...

Edited October 21, 2012 by R Clark Stewart

[White987S]

Buy OEM 75W90 Gear Oil from our site sponsor Sunset Porsche. It's about $29 quart. You'll need 3.

Mobil Delvac 75W90 is excellent, and I use that in my 993 Turbo, but would not put that in my Boxster.

Edited October 21, 2012 by White987S