which oil is better for diesel??

[rion]

castrol magnatec semi-syn has 15w40. but too magnetic for me, kahit sa kamay, ang hirap tangalin. I think myroon din mobil 1 full synthetic, and Royal Purple.

Royal Purple has the most praise here in tsikot.

more info here:
http://tsikot.yehey.com/forums/showthread.php?t=48274

[userfriendly]

Royal Purple has full synth 15w40. PM or call Speedyfix for a dealer near you.

Petron has a synthetic diesel oil. Rev X Trekker or something like that. But its 5w30 if memory works.

[baludoy]

ok ba ang eneos? highly recommended nang ibang enthusiasts kasi ito daw ang oem oil manufacturers ng most japanese automotive vehicles

[Esnie.com]

from castrol CRb i shifted to Petron trekker or all terrain. Mas maganda ang engine performance when i used the petron oil

[vlad123456]

I would really like to try Royal Purple but i could not find it here in laguna. Petron trekker is it synthetic not fully synthetic? Correct me if I am wrong, kasi yun nakikita ko sa label na "synthetic technology" does it mean fully syn or semi-syn??

[Esnie.com]

I would really like to try Royal Purple but i could not find it here in laguna. Petron trekker is it synthetic not fully synthetic? Correct me if I am wrong, kasi yun nakikita ko sa label na "synthetic technology" does it mean fully syn or semi-syn??

yup, trekker is semi synthetic but the all terrain is fully synthetic. Mas cheaper kasi ang trekker and wala naman problem if i use the semi syn as long as i follow the regular pms. actually when i was in college naalala ko yung professor ko in lubricants na against siya in using fully synthetic, mas prefer nila ang mineral base oil or the semi synthetic. fully synthetic although is good pero madali daw magcarbonize unlike the mineral or the semi. anyway just follow the regular pms of our car i think hindi problem kung kineral, semi or fully as long as your satisfied.