Are you still using engine oil, 15W40 in your (MT) transmission?

**kimbon** · February 28th, 2015 12:47 PM

Originally Posted by acergy09

actually, madami hindi nakaka alam nyan bro eh...kaya pa hindi umaabot ng 8 years isuzu nila e may problema na tranny nila, yan ang napansin ko sa ibang member ng FB group ng Isuzu car club...

+1 here. I never owned a isuzu trooper but what's the viscosity of tranny & engine oil stated in the manual? Im guessing baka same lang naman so no point of discussion here.

Originally Posted by miked

with respect to the topic, ang manual transmission is actually a non-hydraulic unit. simpleng meshing at sliding lang naman ng synchros at gears. walang control valve, oil pump etc. na kung saan hydraulic fluid (SAE 20 ATF, "oil ten"/SAE 10, Donax, etc.) ang gamitin for faster flow (along with the other qualities of a hydraulic fluid.)

even sa transmission ng mga elf trucks ng isuzu, they recommend the 5W-40 engine oil. imo, isuzu spec'd engine oil for its transmissions ay dahil siguro mas prone sa increased wear and tear ang synchronizers kapag gear oil kesa engine oil. since gear oil is more viscous than engine oil, mas matagal ang flow to where it needs to be, baka hirap ang synchro rings to cut through it (lalu na kung pudpod na yung internal grooves ng synchros).

kung hydraulic fluid naman (say SAE 20) masyado naman manipis. kaya optimum na siguro yung pagpili nila ng engine oil.

when i said tranny oil is a hydraulic fluid I'm referring to tranny oil in general. for instance an ATF is also used as a hydraulic fluid in some power assisted steering systems, in some modern manual gearboxes like Benz, BMW etc... my mistake as I overlooked the subject heading as MT by TS. hehe

Originally Posted by jakewise

kailangan lang kasi minsan to refer to owner's manual than to refer to hearsays

+1000 here

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Originally Posted by acergy09

actually, madami hindi nakaka alam nyan bro eh...kaya pa hindi umaabot ng 8 years isuzu nila e may problema na tranny nila, yan ang napansin ko sa ibang member ng FB group ng Isuzu car club...

+1 here. I never owned a isuzu trooper but what's the viscosity of tranny & engine oil stated in the manual? Im guessing baka same lang naman so no point of discussion here.

Originally Posted by miked

with respect to the topic, ang manual transmission is actually a non-hydraulic unit. simpleng meshing at sliding lang naman ng synchros at gears. walang control valve, oil pump etc. na kung saan hydraulic fluid (SAE 20 ATF, "oil ten"/SAE 10, Donax, etc.) ang gamitin for faster flow (along with the other qualities of a hydraulic fluid.)

even sa transmission ng mga elf trucks ng isuzu, they recommend the 5W-40 engine oil. imo, isuzu spec'd engine oil for its transmissions ay dahil siguro mas prone sa increased wear and tear ang synchronizers kapag gear oil kesa engine oil. since gear oil is more viscous than engine oil, mas matagal ang flow to where it needs to be, baka hirap ang synchro rings to cut through it (lalu na kung pudpod na yung internal grooves ng synchros).

kung hydraulic fluid naman (say SAE 20) masyado naman manipis. kaya optimum na siguro yung pagpili nila ng engine oil.

when i said tranny oil is a hydraulic fluid I'm referring to tranny oil in general. for instance an ATF is also used as a hydraulic fluid in some power assisted steering systems, in some modern manual gearboxes like Benz, BMW etc... my mistake as I overlooked the subject heading as MT by TS. hehe

Originally Posted by jakewise

kailangan lang kasi minsan to refer to owner's manual than to refer to hearsays

+1000 here

**jakewise** · February 28th, 2015 12:56 PM

Kimbon; my trooper which has a 4JG2 engine uses 15W-40 engine oil which I also use for my tranny as specified in the manual

**acergy09** · February 28th, 2015 10:16 PM

yung iba kasi sabi nila feeling daw nila mas maganda yung gear oil at saka daw mas malambot shifting...pero ako since then engine oil na talaga gamit ko 15W40 multigrade...ma 11 years na yung Sportivo ko, 2005 model, ayus pa naman takbo, wala ka maamoy clutch lining, as in very smooth pa tumakbo, yung shift stick ko lang ang medyo malaki na clearance kakakambiyo...kahit nga yung mekaniko ko, nakikipagtalo na gear oil daw dapat ipalagay ko, pero I insist...tas hinahaluan ko na lang ng tranny oil additives na X-1R....

**maverick74** · March 1st, 2015 12:14 AM

Ilang beses ba kayo mag change ng transmission oil mga master? Once a year ba o base din sa mileage?

**jakewise** · March 1st, 2015 01:03 AM

Originally Posted by maverick74

Ilang beses ba kayo mag change ng transmission oil mga master? Once a year ba o base din sa mileage?

If I am not mistaken, the manual says every 40 thousand kilometers

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Originally Posted by maverick74

Ilang beses ba kayo mag change ng transmission oil mga master? Once a year ba o base din sa mileage?

If I am not mistaken, the manual says every 40 thousand kilometers

**acergy09** · March 1st, 2015 08:46 AM

obserbasyon ko, sobra na ang 40K kms, kasi at 39K kms nung mag palit ako, may mga alibaba na dun sa langis na pinalitan...so siguro kelangan medyo agahan, at least pinaka late na yung 35K kms...kasi siguro at the start of 35K kms, nagsimula na ma degrade yung langis....kaya nga yung iba ginagawa lang 20-25K Kms nagpapalit na...lalo pag mumurahin langis lang ginamit tulad sa petron...

**aioshin** · March 2nd, 2015 10:29 PM

hilander lang po yung sakin, pareha ng specs ng engine oil and recommended per manual for the transmission.

**timtonymanu** · March 10th, 2015 07:53 PM

Crosswind owner here (xto 2001 model). Yes i still use engine oil for the transmission of my ride, as stated in the user manual. At 290 thousand kilometers, wala pa naman ako problem sa tranny.

Even nga yung filler plug ng transmission ng crosswind, may nakalagay na use engine oil only.