1HDT Oil

[scotyz]

Whats the best possible oil i can run in my factory turbo 80 series for a longer big end bearing life . Its blown up once ,i would rather it didnt happen again.

[mickbeny]

Hi all...Caltex delo 400 CXJ.

[scotyz]

Is that mineral or synthetic

[dumbdunce]

delo 400 and delo CXJ are two different oils. you should use CXJ, the J is for Japanese, it has lots of calcium in it to help the dodgy factory big end bearings in toyotas. if, however, your engine was built with good aftermarket main and big end bearings (ACL are probably the best), then you can use any quality diesel oil.

Castrol Jmax is about the only other easily available oil that meets toyota's specifications for that engine, but I have had trouble with it thinning well before service interval, albeit with indirect injected motors, so it could be worth a try.

cheers

DD

[sniper]

I use penrite

[quick60]

it has lots of calcium in it to help the dodgy factory big end bearings in toyotas. if, however, your engine was built with good aftermarket main and big end bearings (ACL are probably the best), then you can use any quality diesel oil. DD

The calcium doesn't help the bearings, it's a cleaning agent and stops the build up of soot deposits in the gap between the top of piston and the top ring. Jap diesels have a tall thin gap, where US ones have a wide flat gap, so the engine needs to be kept clean here to avoid scuffing and bore wear. The bearing problem was a result of the wrong materials being used, not an oil issue.
Any oil with a calcium content of 3000 ppm or more will work best. My preference is ULX-110 Diesel supreme, which is a custom blend that will give you more protection than you need, and allow 20K change intervals.

[dumbdunce]

...The bearing problem was a result of the wrong materials being used, not an oil issue.

very, very reliable sources (who must unfortunately remain nameless) disagree. Craig Vincent has an excellent write up on it somewhere.

The 'wrong' material was (and still is) a part of toyota's alleged environmental initiative.

There are different flavours of calcium additives, perhaps they do both upper cleaning/bottom lubrication? I know zinc is the traditional contact/boundary lubricant for main/big end bearings, however the toyota bearing material is "different" (contains no lead for starters) and therefore needs different lubrication especially on direct injection engines to protect bearings especially at start and idle.

cheers

DD