Which brands of conventional oil are believed or known to reduce oil consumption? I’m not interested in running synthetic oil right now – used Mobil 1 in the past but have switched back to dino – mostly Citgo SuperGard recently and occasionally Chevron Supreme.
98 Isuzu Trooper. Almost 75,000 miles. The 3.5L V6 in Troopers is known to be a frequent oil consumer. Some folks report consumption of a quart every 1500, 2000, 3000 miles. Some report no consumption at all. Our Trooper has gone from 1 qt every 2500-3000 to 1 qt every appx 1500 miles. Consumption rate seems to be increasing during the past 10k miles – not sure if it’s related directly to running synthetic, to switching from synthetic back to dino, or to running Citgo SuperGard, or none of the above.
My concern is not so much the consumption rate, but the fact that the consumption rate seems to be INCREASING.
First 40k miles, truck ran conventional oil SJ rated. 40-45k, Mobil 1 / Drive Clean 50/50 blend. 45-65k miles Mobil 1 Tri-Synthetic SJ. 65-75k miles Citgo SuperGard SL dino.
I always use 5W30 in this truck, based on comments that this engine runs better on thinner oil due to potentially noisy lifters etc. I know 10W30 would probably have less consumption but am reluctant to switch over, for the aforementioned reason plus it’s winter here in Michigan and temps often reach 10-20 F. Is a 10W30 dino oil too thick for such conditions?
I’ve read several threads, including the ‘How to reduce oil consumption – tips and tricks,’ but have not seen any comments on specific brands of oil that seem to have less consumption.
What else should I try?
The truck is well maintained. I haven’t checked the PCV valve in a while so not sure if that could be contributing to the high consumption rate.