Thread: engine oil

It seems the general out-take go something like this?

• 15w40's like RX Super are adequate and are not likely to kill your Perentie anytime soon
• HPR30 has worked quite successfully for some owners
• GX-4's like Manual VMX 80 or Syntrans are more optimal according to some owners but elevated leaking due to viscosity has been noted in one test case
• Diff and Axle oils should NOT be used under any LT95 GB or TC circumstances

Thanks for the summary
Great!!
Phil

Guys I got a bit lost there i though we were talking engine oil.
I have been using Penrite HPR-50 and HPR diesel,( I think its a 15-50 as well).

I only had two cars in the last 27 years, Volvo 265 GLE, ( comfortable, complicated,fast & mechanics hated them) and Landrover defender.

A german/aussie mechanic told me to only use HPR 50 in the V6 volvo he said anything else you're asking for trouble, it's very hot running engine that thins the oil out and bakes it in the OH camshaft lube galleries. he pointed out three volvo V6s in his workdshop waiting for rebuild due to jammed camshaft tensioner due to baked oil. My own car you could hear the difference when the engine was hot, you could not hear the valve gear when I used Penrite. When I checked on the cylinder heads, cam chain galleries they were spotlessly clean with no sigh of baked oil etc.

On my landrover using the common 15-40 oils after a long slog up a mountain in low range or heavy sand the oil pressure would be very low. With penrite i still would have 10 psi at idle compared to five psi with the others. I never tried synthetic because i'm too stingy. But for conventional engine oils I don't think you can beat Penrite. ( I'm not a penrite employee and haven't received any freebies etc )

How does this sound:

Summer / Heavy loading:
Engine: RX Super or HPR50
GB/TC: HPR30

Winter / Regular loading:
Engine: HPR30 or HPR Diesel or RX Super
GB/TC: HPR30

If the above is not appropriate, please advise and I will modify / remove to avoid confusion.

DBT, Engine choices sounds all good. I'm not sure you need to change is with the seasons , does the hunter valley get very cold? HPR 15/50 would be fine all year around I think. at $7 per liter, superchaep auto, looks good value. But either way your Suzu will be lovin it

Transfer case I don't know there's plenty of good advice there. cheers simmo

More for climate extreme regions i guess. I get sub zero (just) winter mornings a couple weeks of the year, up to mid-40s in high summer. I'm sure others have more extremes than this. Combine this with your engine's duty cycle to make the best choice.

Originally Posted by DBT

How does this sound:

Summer / Heavy loading:
Engine: RX Super or HPR50
GB/TC: HPR30

Winter / Regular loading:
Engine: HPR30 or HPR Diesel or RX Super
GB/TC: HPR30

If the above is not appropriate, please advise and I will modify / remove to avoid confusion.

HPR50 is not suitable for diesels and on top of that is far too viscous. RX Super is a 15W40, which is fine all year round - unless you are heading to the snow where you may want something thinner.

I (and others) have posted the facts behind using an appropriate gearbox oil iin the gearbox and t-case. I would not use HPR30.

I have HPR30 in the GB and Transfer according to mechanic in the county, I don't have any issues with gear changes.

I was going to use this in the Series when I go to replace the oils in that.

I assume it's not suitable for use in the Engine and I should be looking for a Diesel oil if so whats the best choice there ?

I had a search around for posts regarding using HPR30 that you are refering to(isuzurover) and couldn't see any reasons why it shouldn't be used only that there were more moden oils that might be better alternatives.

I was keen to use all the same oils if I could for simplicities sake