Is anybody still doing a 10-15K oil change?

12k oil
6k grease

got 1.9 mil on truck, 900,000 on motor since overhaul, just stuck new head on 40k ago (original head, yes 1.86 on it) but no failure

got head off and i had been doing oil every 12k with 1 gal lucus and oil sample every other and they was showing no wear.

Shop said when we get head off we should do pistons sleeves ect, i said fook too u are ive got clean samples , no blowby, oil press @ 60, theyll b in great shape and if u think not u will call me and show me they need yanked. Yeah he called to say he couldnt believe how they looked for almost a mil,

I ran to 20k ONCE for a oil change and after i took a sample will never do again

 

I have not done anything less than 20,000 mile OCI's since the early 90's. I took one N-14 to over 1.4 million without any issues doing 30,000 mile OCI's on it. I run a bypass unit on this one and now synthetic, and do regular oil sampling. It gets changed when the samples say to do it. I don't use OCI for my greasing regimen. I crawl under the truck weekly and pump a little grease and check things out. NO shop ever does the grease job. I've gotten lazy with this truck, and I do have a shop change the oil when I need to. But no one carries the filters or oil I want, so I carry that so all I pay for is a labor/disposal charge.

At 15,000 miles on my present oil in the truck, it still was 80% to what came out of the jug. Soot was still below .6, iron was at 7, lead <2, Tin <2, Chromium 4, copper 1, TBN was at 7.8 (started at 10), no water, fuel, or glycol. Oil level has barely budged off the full mark. Very low oxidation/nitration. Why throw it away?

I do 12,000 mile oil changes on my Jeep Liberty Diesel though. That makes it twice a year.

 

10,000 for me

 

I have always done 15,000 OCI's, I am going to bump it up to 20,000 and see what the oil samples look like.

 

I actually have a truck with an hour meter now. I decided to start it on a 400 hour regiment between drains and the last sample looked good it hauls flatbed OTR. I do my dump at 10K miles and the samples on both trucks look like I could stretch it more. But I won't.

 

I learned the hard way that doing a $15 or $20 oil sample is better maintainance than my 8 K mile oil changes were.

 

Same here for 13 years

 

<-Volvo D13, EGR/DPF,( model 2008 ) in owner manual Volvo is recomanding to change oil every 35,000 miles(3 oil filter). But... 2 years ago (aprox; i was @ 500,000 miles) my oil pan gasket was leaking; I noticed my oil was dirty soon after oil change; I took the truck in shop @ Volvo to replace the gasket; i was in waiting room when the shop foreman called me in shop and show me oil pan; he said he never seen something like this;I had more than half inch of thick mud/ emission shot/ dirt mixed with oil , aprox 2 lbs on the bottom of the oil pan after they drained oil. This can't do any good to the motor; he recomended to change oil more often and when i do it, to run the engine and agitate the emission dirt just seconds before draining it. After this i cleaned /washed the oil pan 2 more times, was not this bad but i still had some stuck on the bottom. I tell you if you have a 2008 or newer motor and you notice dirty oil soon ofter change, remove the oil pan and clean it.

 

Here we go again

 

for over 20 years oil change on my trucks are at near 8,000 miles but if I'm too busy I wouldn't go past 10,000 I will stop everything I'm doing and do the oil change, I had a 290 cummins that the oil will drain at the same color that was put in the motor 8,000 later, never seen anything like it.