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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...

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...

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

I have a 2013 escape with the 2.0L ecoboost motor, 8500 miles total on this car. I am running a wix filter and Mobile 1. I have 4600 miles on this oil change. Mixed driving , but quite a bit of in town under five mile to the destination. I am going on a 800 mile run to eastern OR. For the oil...

I have a 351W motor that is stroked to 418. Forged rotating assembly with a billet roller cam. It has .0025 to .003 main bearing clearances and .0024-.0027 rod bearing clearances. These clearances are a bit larger since it is a street / strip race prepped motor. The motor has a Mellings HV oil...