Mobil 1 Oil in Landcruiser 100 Td

Read the comparisons here and make a decision - it's your vehicle :)

Mobil 1

Delvac 1

Maîneÿ . . .

I myself think that they would be overkill. They are both great oils, but i myself would stick with a 15w/40. Lots of people swear by that Delo 400 and the Penrite Diesel 15 for the Tojo motors. I myself like Penrite oils and always use them throughout vehicle.

Full synthetic is overkill i reckon, as only the latest tech European diesels probably call for them. Semi synthetic would be plenty. As long as they meet or exceed the API specs your laughing.

Go for it Drew!
I put our grey import Hilux Surf (1KZ-TE engine) on Mobil 1 (5W-50) ten years ago.
Initially had no idea what would be a suitable service interval, so had the local Mobil distributor do an oil sampling / lab analysis exercise. This was the only way to safely establish as to wether it was possible to extend the oil change interval from the Toyota 5000K - established using mineral oil. Each lab sample was taken mid stream during the oil change. Oil filters were changed at each oil change.
The first lab test was done after running 7500K and showed the oil to be still in good condition, with a recomendation to extend to 10,000K.
The 10,000K sample also showed oil in good condition with another recomendation to extend to 15,000K.
The 15,000K sample once again showed oil in good condition - with a viscosity index better than NEW mineral oil!
The next interval was done at 20,000K - but showed rising ash levels and the recomendation was to return to a 15,000K service interval.
This has been done and the vehicle now has 190,000K on the odo. It had 80,000K on it when it was changed to full synthetic.

Some will argue that the extra cost associated with full synthetic can not be justified. In the case of the vehicle described above - by safely extending the service interval using lab sampling - from 5,000K to 15,000K has actually reduced the overall cost. 1 filter instead of 3 to start with!

The service interval on our vehicle can not be taken as gospel for all similar vehicles as other factors will also be reflected in the sampling. Aspects like sealed or dirt road operation, short or long runs, average ambient temperature use, air filter servicing, housekeeping practice (Like wiping around the dip tube and oil filler prior to opening) - all will influence the sample.

We use the same Mobil full synthetic as a full fleet oil - in every 4 stroke from the lawnmower, generator, all motorcycles, all efi cars and also our Hino Turbo - diesel motorhome.
Some of the vehicles have also shown improved fuel consumption figures - one motorcycle a full 10% !
One vehicle - a 4x4 F150 with a 5.8L efi dual fuel with LPG, started using oil after being put on the Mobil 1 - initially 1 litre per 1000K - but after 3000K it stoped using oil! Strange - but it seems that the oil control rings were possibly gummed up and the synthetic cleaned them out over time. Later it never needed any topping up in a 15,000K service interval.

Highly recommended

Check out this web site and it may provide an/the answer you are seeking.

Bob is the oi lguy

Failing that I would respectfully suggest that you check the OEM specs for your particular engine.

Funny as it may seem, the Manufacturers do have some ideas about what oil specs should be used in their motors. Not what Brand Name to use - just the specs that the oil should be and the recommended oil change intervals.

Eg. 15/40 CF for a 1HZ Diesel etc etc.

Regular oil and filter changes are the second best investment you will ever spend on your vehicle.

And, I might add you can buy 10 packs of filters & sump washers from Toyota at a much reduced price than buying them singularly.

DD

Drew,

My understanding is that Mobile 1 is designed for a petrol engine. A diesel engine oil contains more detergent as the engine has a great deal more soot. Hence the purpose of the oil is lubricate, cool engine and remove soot.

If you propose to reduce oil changes by using mobile 1, I fear it will not have a good effect.

I used it in my fleet of statesmans and found we could go 35.000 kilometers between oil changes but this was in petrol engines.

Hi
Do you mean Mobil 1 Turbo Diesel Truck 5w-40? I have not seen it where I buy my oils and may not be available in au? (googled it)
I thought Mobil 1 was for petro/gas engines.
Bob W