1990 toyota corolla diesel 1.8d motor oil

[somerandomguy1]

Since this is a 30 year old engine and and has not been recently overhauled, I wonder if using a synthethic blend diesel oil or synthetic engine oil will cause oil leaks?

If I knew it didnt i would probably run rimula r5 lm syn blend.

 

[Motu]

1C, 2C and 3C are all cast iron heads. 3C is usually horizontal and was used in the Estima.

 

[somerandomguy1]

thank you motu.

 

[somerandomguy1]

Ok so i used john deere plus 2 15w40 with no issues but then i switched to delo ultra gold isosyn 15w40 and now there is a leak in the back of the engine?

 

[somerandomguy1]

All ok. Leak was coming from high pressure oil hose.

 

[bullwinkle]

I'm late to this one, but you DEFINITELY don't want T1 or other CF-2 rated HDEO in any 4 stroke diesel running NON-low sulfur diesel fuel, it'll get acidic quickly. If you can find CI-4 or older HDEO (or whatever the ACEZ rating is for pre-DPF diesels), it'll protect better.

 

[somerandomguy1]

i have to change oil again soon and i realized that the diesel here in nicaragua is high sulfur 5000 ppm, so which out of these following oils is low SAPS:

shell rimula r4 15w40 with ci-4 plus specs
castrol crb turbomax 15w40 with ci-4 specs
delo ultra gold 15w40 with ci-4 specs
castrol crb turbo g4 with ci-4 plus and cj-4 specs
mobil delvac mx 15w40 with ci-4 specs
valvoline all fleet e700 plus 15w40 with ci-4 plus specs
pennzoil long life gold 15w40 with cJ-4 specs
john deere plus 50 II 15w40 with cj4 specs

thanks