Miata Mailing List: July 1997, Message #36
sponsored by



     



From: 	"Alfie Rufino" <obsigame@globe.com.ph>

Subject: Mobil 1 for gear oil?!

Date: 	Wed, 2 Jul 1997 01:06:44 -0500



I've had problems with sending my message to the list and am unsure if it

went in.  Anyway, here it is again just in case it didn't the first time:



Hello everyone,



Reptile's due for a manual transmission and rear differential gear oil

change.  I understand that the proper lubricants to use are SAE 75w-90 and

SAE 90 respectively.  I gave Mobil Philippines a call to check on the

prices for the synthetic versions (for my piece of mind) of the said

lubricants and got a very unusual response.  They suggested that instead of

using the said lubricants, it would be better to just use Mobil 1 SAE

15w-50 synthetic engine oil for both the tranny and differential.  I use

the stuff for my engine due to increased loads from the SC, but for the

drivetrain?!  They mentioned that this would provide even slicker shifting.

 I am aware that some other car manufacturers (Honda Phils.) and mechanics

recommend the same thing.  Any thoughts on this?  Reptile usually goes out

in 95+ degree weather, won't the oil break down from the heat?  Another

thing, which is a higher standard, GL-4 or GL-5?



Thank you all!

Alfie (obsigame@globe.com.ph)

96 MX-5 1.6 BRG "Reptile"

Team Mazdaspeed