Thread: TD5 Oil Report.

Originally Posted by Slunnie

I would say the issue is with 0-30 specifically from what I've heard also. Its too thin. Landcruiser 300 are having wear and failure problems with 0-30 (as recommended) also. The fix for that is to go thicker in the grade.

That's why I shared the oil report. I found it really fascinating that my 5w-40 after 5000k was dropping in viscosity without fuel dilution. The fact that the oil analysis place highlighted it as an abnormality suggests it's of concern.

It would have been really really interesting to get the oil report on the 5w-30 but I'm not going to do the experiment myself.

It's worth noting that the book says 30, 40, 50 are all acceptable oil grades in a TD5.

I promise will update this next test.

Originally Posted by Captain_Rightfoot

That's why I shared the oil report. I found it really fascinating that my 5w-40 after 5000k was dropping in viscosity without fuel dilution. The fact that the oil analysis place highlighted it as an abnormality suggests it's of concern.

It would have been really really interesting to get the oil report on the 5w-30 but I'm not going to do the experiment myself.

It's worth noting that the book says 30, 40, 50 are all acceptable oil grades in a TD5.

I promise will update this next test.

There's a thread in General Chat from Dec 2024 titled 'Modern OEM engine oils' or similar.

At the time I posted this:

'A couple of weeks ago my sister bought an Isuzu ute with about 120 thou on it. Pretty much like new. She lives in the sticks.

A few days later she told me the oil light came on, but she kept driving to work.

It wasn't the oil light we all know well, but a 'degraded oil' warning (kinda like reduced oil pressure before the serious light comes on)............. so she puts it in for an immediate service.

The owner's handbook specifies all sorts of grades including 10-30, 10-40. I told her to go for 10-40. They put 15-40 in and the trip computer thing is still reading 8 litres per 100kms, i.e. no real difference in mileage.'

From memory someone also posted something about degradation of synth vs mineral oils............ you might find it of interest.

DL