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...and my friends are giving me a complex about the bypass valve opening and letting the crud into the engine. I've done my research on here and feel comfortable that I'm fine. Here's the skinny.. 2004 2500HD with 122K. Semi syn kendall 5w30. oil coming out had 5000 miles on it. put fresh...

Figured I would throw it out there. Haven't looked up the specs. Just have it lying around. Car is just a tinkerer.

What are your thoughts on the accuracy of it? I am shocked at the lifespan of the oil according to the computer. I do a ton of short tripping where oil temp doesn't even hit 180 yet it's giving a 8500 mile oci according to the OLM. Wouldn't seem that a full syn would take that even.

As a result of the Great American AZ clean out, I have kendall gt1 blend 10w40 and castrol gtx blend 5w20. Looking to mix for a vortec 6.0. Summer runs only I'm thinking. How do these add packs work together? Any issues? Thanks

I have a yanmar ex2900 that currently has wolfs head ht in it from the dealer. It's hydrostatic. The dipstick is telling me to add fluid. I can't find it by the quart anywhere. Is it ok to add a quart or so of something else like the traveller premium fluid or do I really need to buy another...

My in laws Camry is consuming roughly a quart per1500 miles. It started to on 5w20 so went to 5w30. Was fine for a while but now seems to be doing it again. Using castrol gtx white bottle only so far. This is a replacement engine with unknown mileage to me but nothing crazy. Oil suggestions...

Just got back from an oil change at the dealership. During our convo, I asked about severe service intervals. They didn't know of any on our 3.5 liter v6 which is MPI as far as I know. They also said that the GDI engines are having issues when going beyond the recommended oci. They are hard on...

I'm gonna drive 30 min to the 2nd nearest store to me. I wanna call now but that could mess up any deals to be had in person possibly.

It's got the Dohc and is an auto. I've read that full syn is best so as to keep the piston channels from clogging. What about t5 10w30 or defy for extra cleaning? I just ordered a bunch of the Kendall and castrol syn blend off the autozone clearance so maybe just use that. 100k on the clock but...

I have been looking for a beater just to run errands and cruise back roads with. Found a 1995 saturn sc for 400 with 100k. Newer tires with new battery plugs wires alternator and brake lines. Seems decent n goes down road n stops. I researched them and their common probs and feel that I could...

I've done some research and it seems that atf starts to breakdown above 175f. True?? My 3.6 pentastar tranny runs at 190-197 consistently. Seems like these temps would affect the fluid rather quickly.

That Briggs/kohler etc branded oil is C rated for diesel? Sorta tells us that hdeo is a good strategy in OPE. Just noticed that the other day

Guy at work says it burns a quart per 2500 miles. Runs Dino. Says he overfilled it with 6 instead of 5 by mistake one time and thinks that's the reason. He does 2500 oci and only puts on 5000 per year. I recommended going to a hm oil like maxlife or pennzoil 5w30 and doing 4000 or 5000 oci. My...

Bought some 0w30 online for our standby generac generator... Was supposed to be german castrol...They handed me castrol edge SL A3/A4 made in Belgium and castrol edge with SPT SL made in Germany. Same or different?? Different bottle labels of course

The fram is much easier to find for me and I know it's liked on here, but wix seems great too...TG3506 vs 51042. Thoughts? Will be doing 2 oci at 4k each most likely. Short trip gm truck. Wix Xp better?

Ok to use in modern cub cadet yanmar that specs 10w30/10w40? Spotted some at autozone

Were these the flavors with the moly?? Semisynthetic I assume

I have 5 quarts of mobil super full syn 5w20. I need to make 6 quarts of full syn or syn blend 5w30. Any ideas?

Looking to spend a grand or less on a fun errand car that I can experiment with oil changes on haha. I need to know what compacts/small cars have the most bulletproof engines and best reliability overall. Thinking of civics, corollas, mazdas etc. totally doesn't matter though. What say you?

Probably discussed before but I am interested in draining syn blend oil that's at 70 percent on the OLM and replacing with synthetic so as to ensure getting through the long cold winter without having to do an oil change. Would it be ok to refill with the drained oil in spring to finish it off...