Recent content by alan_mac

Thanks for the reply, I will try M1 FS 5W40, seems like a good choice.

My non oil expert logic is as follows: Typically my car is run when ambient temp is 70 to 95 F. My full roller 418w is a looser build and has low oil pressure at idle when hot. As I remember... nothing lower than 10 PSI at 900 rpm with ligher oil. So I prefer using 10W40 to have a lttle higher...

I always used a WIX XP but they seem to not be available around here anymore. It currently has a NAPA Platinium in it. The NAPA filter website says their gold and patinium filters are for synthetic oil and are good up to12 month.

I didn't select it for the ZDDP content since it has a roller cam. I typically use royal purple 10W40 performance oil. Due to the high price of RP, I used M1 in it.

Thanks for the feedback. I did run it at full temperature when I put miles on it last summer. I live in a very humid climate (Oregon) so even with my dehumidifier, water absorption for full synthetic is still a question in my mind. I dump the gas out of my 950 holley for off season storage, so I...

I have a 1970 Mustang Mach 1 with a stroked HP 351w. I Changed the oil with Mobile 1 full synthetic 15W50 in Nov 2020. The car is stored in an attached garage in the winters with a dehumidifier running. I ran the car ~ 300 miles in 2021. Not much due to covid and no car shows. The car is back in...

Rethinking after Oro comments and spending the time to read the comparison testing paper. I am going to use Valvoline High Performance 80W90 + Lubegard. I think it performs well in the area's of concern in the differential and it meets the price point. Since this trooper came with my wife, I...

Going with Mobil 1 synthetic, 75W-90 and Lubegard friction modifier for the LSD rear diff. and the same oil in the front diff. I inherited this trooper and have no idea if and when the diff oil was changed. Alan

https://www.lastgreatroadtrip.com/wp-content/uploads/2010/11/gear-oil-comparison.pdf interesting report - Mobil 75W-90 scores well.

Thanks for the post! All good to know. Is this the lubegard you used? https://www.oreillyauto.com/detail/...ted-slip-friction-modifier/42851/4409964 Did you just use 4 oz? Did you replace the front differential gear oil? if so what viscosity did you use? I used 4 oz Motorcraft friction modifier...

any recommendations for the following. GL-5 Limited Slip rear axle differential Isuzu recommends 80W-90 up to 86F and 80W-140 over 100F (off the chart). We had 31 days in the 90's this summer. Doesn't get below 10F Royal purple Maxgear 75W-140 has the modifier already. Seems good but...

Originally Posted By: ToadU ...if your going to spend money for an analysis at $25 or $35 cost why not save the money and just change it for the same cost. I don't see UOAs as valuable except for fleets with expensive filters and large capacities of oil. I use UOAs to build a data base for my...

OK, just wanted to reinforce my thought. I may send it in for analysis to get a feel for it better. Thanks for the feedback!

I have a high performance 351W stroked to 418. It has a 7 quart oil pan, wix hp filter and mobile 1 oil. I changed to oil last spring and ran the engine less than 500 miles last summer. Should I change my oil because its been in the crankcase for 1 year? Oil gurus please advise. Thnaks Alan

Dan; I will try blackstone out for both my 2L ecoboost and my 70 Mach1 418W oil analysis. Thanks to all for the feedback. Alan