I recently decided to try a new oil in my wife's 2005 Prius (at 310,000 km). Previously I've (mostly) been using Castrol Edge 5W30 A3/B4, but recently I changed to Penrite Enviro+ GF5 5W30.
I've not been unhappy with the performance of the new oil, the engine is still running sweet and cold starts sound smooth and all, but I've noticed a fair bit of a jump in oil consumption since the latest change.
I guess that the Penrite oil is probably one that not too many here would know a lot about, being a local Australian blender. However I don't think it's a bad oil, it's SN, GF5 and certified Dexos1.
Mild to moderate oil consumption is very common in higher mileage gen2 Prius, so my previous oil consumption of about 300mL per 3000km (2000 miles) was no great concern to me, but since changing to the new oil it seems to have suddenly risen by somewhere around 50% to 75% more.
Just wondering if viscosity differences alone could account for the difference in oil consumption, or if there is something else going on.
The Castrol has a KV of 72/12 cSt (@40/100C), CCV 6500 cP @-30C, and HTHS of 3.6 cP.
The Penrite has a KV of 63/11 cSt (@40/100C), CCV 4850 cP @-30C, and (I think) HTHS of 2.9 cP.
Penrite Data Here
Edge Data Here
I've not been unhappy with the performance of the new oil, the engine is still running sweet and cold starts sound smooth and all, but I've noticed a fair bit of a jump in oil consumption since the latest change.
I guess that the Penrite oil is probably one that not too many here would know a lot about, being a local Australian blender. However I don't think it's a bad oil, it's SN, GF5 and certified Dexos1.
Mild to moderate oil consumption is very common in higher mileage gen2 Prius, so my previous oil consumption of about 300mL per 3000km (2000 miles) was no great concern to me, but since changing to the new oil it seems to have suddenly risen by somewhere around 50% to 75% more.
Just wondering if viscosity differences alone could account for the difference in oil consumption, or if there is something else going on.
The Castrol has a KV of 72/12 cSt (@40/100C), CCV 6500 cP @-30C, and HTHS of 3.6 cP.
The Penrite has a KV of 63/11 cSt (@40/100C), CCV 4850 cP @-30C, and (I think) HTHS of 2.9 cP.
Penrite Data Here
Edge Data Here
Last edited: